Class 9 CH-4 Test

x = 5, y = -2 is solution for the linear equation

• 2x + y = 9

• 2x - y = 12

• x + 3y = 1

• x + 3y = 0

The point of the form (a , -a) always lie on the line

• x = a

• y = -a

• y = x

• x + y = 0

The graph of the linear equation 5x + 3y = 10 is a line which meets the x axis at the point

• (0,3)

• (3,0)

• (2,0)

• (0,2)

Find the value of k , if x = 1, y = 2 is a solution of the equation 2x + 3y = k

• 5

• 6

• 7

• 8

The linear equation 3x - 11y = 10 has :

• Unique solutions

• Two solutions

• Infinitely many solutions

• No solutions

If the linear equation -5y + x = 10 is expressed in the form ax + by + c = 0. Then the values of a, b, c are:

• a = 1, b = -5, c = 10

• a = 1, b = -5, c = -10

• a = -1, b = -5, c = 10

• a = -1, b = 5, c = 10

A family spends Rs 500 monthly as fixed amount on milk and extra milk costs Rs 20 per liter. Taking quantity of extra milk as x and total expenditure as y. Write a linear equation.

• 20 x + y = 500

• 20 x - y + 500 = 0

• y = 20x + 500

• x - 20y = 500

Any point on y axis is of the form

• (x,0)

• (0,y)

• (x,x)

• (y,y)

Which of the following is a solution for the linear equation 3x + 2y = 9

• (-1, 4)

• (4, 1)

• (0, 0)

• (-1, 6)

If a = 4, b = -2 and c = -3, then linear equation in standard form is

• 4x -2y = -3

• 4x - 2y + 3 = 0

• 4x - 2y - 3 = 0

• 4x - 2y = 3