MCQ Test of 10th, Maths Pair of Linear Equations in Two Variables - Study Material
Question 1 :
The graph of the linear equation $2x -y = 4$ cuts x-axis at
Question 3 :
Let PS be the median of the triangle with vertices $P\left( 2,2 \right), Q\left( 6,-1 \right), R\left( 7,3 \right).$The equation of the line passing through $\left( 1,-1 \right)$and parallel to PS is
Question 4 :
If (a, 4) lies on the graph of $3x + y = 10$, then the value of a is
Question 5 :
$\dfrac{1}{3}x - \dfrac{1}{6}y = 4$<br/>$6x - ay = 8$<br/>In the system of equations above, $a$ is a constant. If the system has no solution, what is the value of $a$
Question 6 :
Equation of a straight line passing through the point $(2,3)$ and inclined at an angle of $\tan^{-1}\dfrac{1}{2}$ with the line $y+2x=5$, is:
Question 7 :
The number of pairs of reals (x, y) such that $x =x^2+y^2$ and $y =2xy$ is
Question 8 :
Two perpendicular lines are intersecting at $(4,3)$. One meeting coordinate axis at $(4,0)$, find the coordinates of the intersection of other line with the cordinate axes.
Question 9 :
The value of $k$ for which the system of equations $3x + 5y= 0$ and $kx + 10y = 0$ has a non-zero solution, is ________.
Question 11 :
What is the nature of the graphs of a system of linear equations with exactly one solution?
Question 12 :
The survey of a manufacturing company producing a beverage and snacks was done. It was found that it sells orange drinks at $ $1.07$ and choco chip cookies at $ $0.78$ the maximum. Now, it was found that it had sold $57$ food items in total and earned about $ $45.87 $ of revenue. Find out the equations representing these two. 
Question 14 :
Some students are divided into two groups A & B. If $10$ students are sent from A to B, the number in each is the same. But if $20$ students are sent from B to A, the number in A is double the number in B. Find the number of students in each group A & B.<br/>
Question 15 :
The linear equation $y = 2x + 3$ cuts the $y$-axis at 
Question 16 :
Choose the correct answer which satisfies the linear equation: $2a + 5b = 13$ and $a + 6b = 10$
Question 18 :
Examine whether the point $(2, 5)$ lies on the graph of the equation $3x\, -\, y\, =\, 1$.
Question 19 :
The sum of two numbers is $2$ and their difference is $1$. Find the numbers.
Question 20 :
The unit digit of a number is $x$ and its tenth digit is $y$ then the number will be 
Question 21 :
State whether the given statement is true or false:The graph of a linear equation in two variables need not be a line.<br/>
Question 22 :
State whether the given statement is true or false:Every point on the graph of a linear equation in two variables does not represent a solution of the linear equation.<br/>
Question 26 :
If $(a, 3)$ is the point lying on the graph of the equation $5x\, +\, 2y\, =\, -4$, then find $a$.
Question 27 :
The graph of the line $5x + 3y = 4$ cuts the $y$-axis at the point
Question 28 :
If $x + y = 25$ and $\dfrac{100}{x + y} + \dfrac{30}{x - y} = 6$, then the value of $x - y$ is
Question 30 :
A choir is singing at a festival. On the first night $12$ choir members were absent so the choir stood in $5$ equal rows. On the second night only $1$ member was absent so the choir stood in $6$ equal rows. The same member of people stood in each row each night. How many members are in the choir?
Question 31 :
If $p+q=1$ andthe ordered pair (p, q) satisfies $3x+2y=1$,then it also satisfies
Question 32 :
Five tables and eight chairs cost Rs. $7350$; three tables and five chairs cost Rs. $4475$. The price of a table is
Question 33 :
Equation of a straight line passing through the origin and making an acute angle with $x-$axis twice the size of the angle made by the line $y=(0.2)\ x$ with the $x-$axis, is:
Question 34 :
Solve the following equations:<br/>$x + \dfrac {4}{y} = 1$,<br/>$y + \dfrac {4}{x} = 25$.Then $(x,y)=$
Question 36 :
If the equations $4x + 7y = 10 $ and $10x + ky = 25$ represent coincident lines, then the value of $k$ is
Question 37 :
A member of these family with positive gradient making an angle of$\frac{\pi }{4}$ with the line3x-4y=2, is
Question 39 :
If $2x + y = 5$, then $4x + 2y$ is equal to _________.
Question 41 :
If the system of equation, ${a}^{2}x-ay=1-a$ & $bx+(3-2b)y=3+a$ possesses a unique solution $x=1$, $y=1$ then:
Question 42 :
What is the equation of the line through (1, 2) so that the segment of the line intercepted between the axes is bisected at this point ?
Question 43 :
What is the equationof Y-axis? Hence, find the point of intersection of Y-axis and the line $y\,=\, 3x\, +\, 2$.
Question 44 :
The graph of the lines $x + y = 7$ and $x - y = 3$ meet at the point
Question 45 :
Assem went to a stationary shop and purchased $3$ pens and $5$ pencils for $Rs.40$. His cousin Manik bought $4$ pencils and $5$ pens for $Rs. 58$. If cost of $1$ pen is $Rs.x$, then which of the following represents the situation algebraically?
Question 46 :
If x and y are positive with $x-y=2$ and $xy=24$ , then $ \displaystyle \frac{1}{x}+\frac{1}{y}$   is equal to
Question 47 :
A line which passes through (5, 6) and (-3. -4) has an equation of
Question 48 :
The solution of the equation $2x - 3y = 7$ and $4x - 6y = 20$ is
Question 49 :
In a zoo there are some pigeons and some rabbits. If their heads are counted these are $300$ and if their legs are counted these are $750$ How many pigeons are there?
Question 50 :
The  linear equation, such that each point on its graph has an ordinate $3$ times its abscissa is $y=mx$. Then the value of $m$ is<br/>
Question 51 :
Solve the following simultaneous equations :$\displaystyle \frac{16}{x + y}\, +\, \frac{2}{x - y}\, =\, 1;\quad \frac{8}{x + y}\, -\, \frac{12}{x - y}\, =\, 7$
Question 52 :
What is the value of $a$ for the following equation: $3a + 4b = 13$ and $a + 3b = 1$? (Use cross multiplication method).<br/>
Question 53 :
Based on equations reducible to linear equations<br/>Solve for x and y $\dfrac {2}{x}+\dfrac {3}{y}=2; \dfrac {1}{x}-\dfrac {1}{2y}=\dfrac {1}{3}$
Question 55 :
The simultaneous equations, $\displaystyle y = x + 2|x| $ & $y = 4 + x - |x|$ have the solution set 
Question 56 :
Solve the equations using elimination method:<br>$x - 4y = -20$ and $4x + 4y = 20$
Question 57 :
If $\sqrt{\dfrac{x}{y}}+\sqrt{\dfrac{y}{x}} = \dfrac{10}{3}$ and $ x + y = 10$, find the value of $xy.$
Question 58 :
Solve the equations using elimination method:<br>$2x + 3y = 12$ and $4x + 2y = 8$
Question 59 :
Solve the following pair of equations:<br/>$\displaystyle \frac{6}{x}+\displaystyle \frac{4}{y}= 20, \displaystyle \frac{9}{x}-\displaystyle \frac{7}{y}= 10.5$
Question 60 :
If $y=a+\dfrac { b }{ x } $, where $a$ and $b$ are constants and if $y=1$ when $x=-1$, and $y=5$ when $x=-5$, what is the value of $a+b$?
Question 62 :
Based on equations reducible to linear equations, Solve for x and y:$6x + 5y = 8xy$ and $ 8x + 3y = 7xy$<br>
Question 63 :
If $2x=t+\sqrt{t^2+4}$ and $3y=t-\sqrt{t^2+4}$ then the value of  $y$ when $x=\dfrac {2}{3}$, is ____.
Question 65 :
Solve the following pairs of linear (simultaneous) equation by the method of elimination by substitution:$y =\, 4x\, -\, 7$, $16x\, -\, 5y\, =\, 25$
Question 66 :
Solve the following pair of simultaneous equations:$\displaystyle\,3x\, +\, \frac{1}{y}\, =\, 13\, ;\, \frac{2}{y}\, -\, x\, =\, 5$
Question 67 :
Solve the equations using elimination method:<br>$2x - y = 20$ and $4x + 3y = 0$
Question 68 :
If$\displaystyle \frac{x+y}{x-y}=\frac{5}{3}\: and\: \frac{x}{\left ( y+2 \right )}=2$ the value of (x , y) is
Question 69 :
Given that $3p + 2q = 13$ and $3p - 2q = 5$, find the value of $p + q$
Question 70 :
Solve the equations using elimination method:<br>$x - 6y = 9$ and $2x - y = 7$
Question 72 :
Solve the following pair of equations by reducing them to a pair of linear equations:<br/>$\displaystyle \frac {2}{\sqrt x}+\frac {3}{\sqrt y}=2, \frac {4}{\sqrt x}-\frac {9}{\sqrt y}=-1$<br/>
Question 73 :
Solve the equations using elimination method:<br>$2x + 3y =15$ and $3x + 3y = 12$
Question 74 :
One pendulum ticks $57$ times in $58$ seconds and another $608$ times in $609$ seconds. If they start simultaneously, find the time after which will they tick together?
Question 75 :
If $6$ kg of sugar and $5$ kg of tea together cost Rs. $209$ and $4$ kg of sugar and $3$ kg of tea together cost Rs. $131$, then the cost of $1$ kg sugar and $1$ kg tea are respectively<br/>
Question 76 :
If the product of two numbers is $10$ and their sum is $7$, which is the greatest of the two numbers?
Question 77 :
Solve the following pairs of equations by reducing them to a pair of linear equations:<br>$\displaystyle \dfrac {7x-2y}{xy}=5, \dfrac {8x+7y}{xy}=15$<br>
Question 78 :
Solve the following pair of simultaneous equations:$\displaystyle \frac{3}{a}\, +\, \frac{4}{b}\, =\, 2\,;\, \frac{9}{a}\, -\, \frac{4}{b}\, =\, 2$
Question 79 :
With Rs. $1000$ a rancher is to buy steers at Rs. $25$ each and cows at Rs. $26$ each. If the number of steers $s$ and the number of cows $c$ are both positive integers, then:
Question 83 :
If $2p + 3q = 18$ and $4p^{2} + 4pq - 3q^{2} - 36 = 0$ then what is $(2p + q)$ equal to?
Question 84 :
Solve the equations using cross multiplication method: $3x + 2y = 10$ and $4x - 2y = 4$<br/>
Question 85 :
In the system of equations $\dfrac {12}{x+y}+\dfrac {8}{x-y}=8$ and $\dfrac {27}{x+y}-\dfrac {12}{x-y}=3$, the values of $x$ and $y$ will be
Question 86 :
Solve the following pair of equations:<br/>$\displaystyle \frac{9}{x}-\displaystyle \frac{4}{y}= 8$, $\displaystyle \frac{13}{x}+\displaystyle \frac{7}{y}=101$
Question 87 :
Solve: $4x+\displaystyle \frac{6}{y}= 15$ and $6x-\displaystyle \frac{8}{y}= 14$. Hence find the value of $k$, if $y= kx-2$.
Question 88 :
Solve the following pairs of linear equations by elimination method:<br/>$217x + 131y = 913$ and $131x + 217y = 827$<br/>
Question 89 :
Determine the values of a and b for which the following system of linear equation has infinite solutions.<br>$2x-(a-4)y=2b+1$<br>$4x-(a-1)y=5b-1$<br>
Question 90 :
Solve the following pair of linear (simultaneous) equations by the method of elimination:<br/>$2x+7y= 39$<br/>$3x+5y= 31$
Question 91 :
If $y=a+\cfrac { b }{ x } $, where $a$ and $b$ are constants, and if $y=1$ when $x=-1$, and $y=5$ when $x=-5$, then $a+b$ equals.
Question 92 :
Find the value of x and y using cross multiplication method: <br>$3x + 4y = 43$ and $-2x + 3y = 11$
Question 93 :
Solve the following simultaneous equations by the method of equating coefficients.$\displaystyle \frac{x}{2}+3y=11; \, \, x+5y=20$
Question 94 :
Solve the following simultaneous equations by the method of equating coefficients.$\displaystyle \frac{x}{3}+\frac{y}{4}=4; \, \, \frac{5x}{6}-\frac{y}{8}=4$
Question 95 :
Solve the following pair of equations by reducing them to a pair of linear equations:<br/>$\dfrac {10}{(x+y)}+\dfrac {2}{(x-y)}=4, \dfrac {15}{(x+y)}-\dfrac {5}{(x-y)}=-2$<br/>
Question 96 :
Solve the following pair of equations by reducing them to a pair of linear equations:<br/>$\dfrac{2x-3y}{xy}=4$ and $\dfrac{15x+3y}{xy}=30$
Question 97 :
Solve the following pair of simultaneous equations:$\displaystyle \frac{6}{x}\, -\, \frac{2}{y}\, =\, 1\,;\, \frac{9}{x}\, -\, \frac{6}{y}\,=\, 0$
Question 98 :
Solve: $\displaystyle \frac{3}{x}-\displaystyle \frac{2}{y}= 0$ and $\displaystyle \frac{2}{x}+\displaystyle \frac{5}{y}= 19$. Hence, find $a$ if $y= ax+3$.
Question 99 :
If $2x + y = 23$ and $4x - y = 19$; find the values of $x - 3y$ and $5y - 2x$.<br/>
Question 100 :
The number of solutions for the system of equations $2x + y = 4, 3x + 2y = 2$ and $x + y = - 2$ is
Question 101 :
Equations of the two straight lines passing through the point $(3, 2)$ and making an angle of $45 ^ { \circ }$ with the line $x - 2 y = 3$, are
Question 102 :
The axes being inclined at an angle of $30^o$, the equation of straight line which makes an angle of $60^o$ with the positive direction of x-axis and x-intercept 2 is
Question 103 :
The ratio between the number of passangers travelling by $1^{st}$ and $2^{nd}$ class between the two railway stations is 1 : 50, whereas the ratio of$1^{st}$ and $2^{nd}$ class fares between the same stations is 3 : 1. If on a particular day, Rs. 1325 were collected from the passangers travelling between these stations by these classes, then what was the amount collected from the $2^{nd}$ class passangers ?
Question 104 :
A line perpendicular to the line $\displaystyle 3x-2y=5$ cuts off an intercept $3$ on the positive side of the $x$-axis. Then 
Question 105 :
The equation of the line passing through the point $P(1, 2)$ and cutting the lines $x + y - 5 = 0$ and $2x - y = 7$ at $A$ and $B$ respectively such that the harmonic mean of $PA$ and $PB$ is $10$, is
Question 106 :
A straight line L through the point $(3, - 2)$ is inclined at an angle of 60$^o$ to the line $\sqrt 3 x + y = 1$. If $L$ also intersects the $x-$axis, then the equation of $L$ is
Question 107 :
Equations $\displaystyle \left ( b-c \right )x+\left ( c-a \right )y+\left ( a-b \right )=0$ and $\displaystyle \left ( b^{3}-c^{3} \right )x+\left ( c^{3}-a^{3} \right )y+a^{3}-b^{3}=0$ will represent the same line if<br>
Question 108 :
Based on equations reducible to linear equations<br/>Solve for x and y: $\dfrac {16}{x+3}+\dfrac {3}{y-2}=5; \dfrac {8}{x+3}-\dfrac {1}{y-2}=0$<br/>
Question 109 :
A straight line $L$ through the point $(3,-2)$ is inclined at an angle $60^{o}$ to the line $\sqrt{3}x+y=1$. lf $L$ also intersects the $x-$axis, then the equation of $L$ is<br>
Question 110 :
Based on equations reducible to linear equations, solve for $x$ and $y$:<br/>$\dfrac {x-y}{xy}=9; \dfrac {x+y}{xy}=5$<br/>
Question 111 :
Equation of straight line $ax + by + c= 0$, where $3a + 4b + c = 0$, which is at maximum distance from $(1, -2)$,is
Question 112 :
Based on equations reducible to linear equations<br/>Solve for x and y: $\dfrac {24}{2x+y}-\dfrac {13}{3x+2y}=2; \dfrac {26}{3x+2y}+\dfrac {8}{2x+y}=3$
Question 113 :
Father's age is three times the sum of ages of his two children. After $5$ years his age will be twice the sum of ages of two children. Find the age of father.<br/>
Question 114 :
The sum of three numbers is $92$. The second number is three times the first and the third exceeds the second by $8$. The three numbers are: 
Question 115 :
If the equations $y = mx + c$ and $x  \cos  \alpha + y \sin  \alpha = p$ represent the same straight line, then
Question 116 :
The cost of an article $A$ is $15$% less than that of article $B.$ If their total cost is $2,775\:Rs\:;$ find the cost of each article$.$ <br>
Question 118 :
The equation of the straight line which passes through $(1, 1)$ and making angle $60^o$ with the line $x+ \sqrt 3y +2 \sqrt 3=0$ is/are.
Question 119 :
A line has intercepts $a$ and $b$ on the coordinate axes. When the axes are rotated through an angle $\alpha $, keeping the origin fixed, the line makes equal intercepts on the coordinate axes, then $\tan$ <br> $\alpha $=<br/>
Question 120 :
The equations of two equal sides of an isosceles triangle are $ 3x + 4y = 5 $and $4x - 3y = 15$. If the third side passes through $(1, 2)$, its equation is
Question 121 :
Equation of a straight line passing through the point $(2, 3)$ and inclined at an angle of $\tan^{-1} \left(\dfrac{1}{2}\right)$ with the line $y + 2x = 5$ is