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Linear Equations in Two Variables

Multiple Choice Questions

131. The opposite angles of a parallelogram are equal. Write a linear equation in two variables to represent the statement.
x + y = 0
x = y
x = 2y
x = 2y

x = y

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132. The force applied on a boy is directly proportional to the acceleration produced in the body. Express this in the form of a linear equation in two variables.

y = x
y + x = 0
y = kx
y = kx

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133. If y = 2x – 3 and y = 5, then the value of x is

144 Views

134. The pair satisfying 2x + y = 6 is

(1, 2)
(2,1)
(2, 2)
(2, 2)

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135.

If $4 over straight x plus 5 y equals 7 space a n d space x equals negative 4 over 5 comma space$ then the value of

$37 over 15$
2
$1 half$
$1 half$

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136.

If $3 over straight x plus 4 y equals 5$ and y = 1, then value of x is

3
$1 third$
- 3
- 3

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137. If the unit’s and ten’s digits of a two digit number are y and x, then the number is

10x + y
10y + x
x + y
x + y

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138. The age of a boy is one-third the age of his mother. If the present age of mother is x years, then the age of boy after 12 years will be

$x over 3 plus 12$
$fraction numerator straight x plus 12 over denominator 3 end fraction$
x + 4
x + 4

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139. Express y in terms of x in the equation 5y – 3x – 10 = 0.

$y equals fraction numerator 3 x plus 10 over denominator 5 end fraction$
$straight y equals fraction numerator 3 straight x minus 10 over denominator 5 end fraction$
$bold y bold equals fraction numerator bold 10 bold x bold plus bold 3 over denominator bold 5 end fraction$
$bold y bold equals fraction numerator bold 10 bold x bold plus bold 3 over denominator bold 5 end fraction$