Linear Equations for Two Variables (Class-9,Math) / Quiz / By gyanpur Please enter your email: 1. The value of y at x = -1 in the equation 5y = 2 is (a) 52 (b) 25 (c) 10 (d) 0 2. Equation of a line which is 5 units distance above the x-axis is (a) x = 5 (b) x + 5 = y (c) y – 5 (d) x – y = 0 3. x = 3 and y = -2 is a solution of the equation 4px – 3y = 12, then the value of p is (a) 0 (b) 12 (c) 2 (d) 3 4. Which of the following is the equation of a line parallel to y-axis? (a) y = 0 (b) x + y = z (c) y = x (d) x = a 5. Any point on the line y = 3x is of the form (a) (a, 3a) (b) (3a, a) (c) (a, a3) (d) (a3, -a) 6. Any point of the form (a, – a) always lie on the graph of the equation (a) x = -a (b) y = a (c) y = x (d) x + y = 0 7. The graph of the equation 2x + 3y = 6 cuts the x-axis at the point (a) (0, 3) (b) (3, 0) (c) (2, 0) (d) (0, 2) 8. Graph of linear equation ax + by + c = 0, a * 0, 6*0 cuts x-axis and y-axis respectively at the points. (a) (−ca, 0), (0, −cb) (b) (0, −cb, 0), (−ca, 0) (c) (-c, 0) (0, -c) (d) (x, 0) (y, 0) 9. Which of the following ordered pairs is a solution of the equation x – 2y – 6? (a) (2, 4) (b) (0, 3) (c) (-4, 1) (d) (4, -1) 10. How many linear equation in x and y can be satisfied by x = 1 and y = 2? (a) only one (b) two (c) infinitely many (d) three 11. Solution of linear equation 2x + 0.y + 9 = 0 is (a) (92, m) (b) (n, −92) (c) (0, −92) (d) (−92, 0) 12. If (3, 2) is the solution 3x – ky = 5, then k equals of the equation (a) 2 (b) 4 (c) 3 (d) 12 13. Cost of book (x) exceeds twice the cost of pen (y) by Rs 10. This statement can be expressed as linear equation. (a) x – 2y – 10 = 0 (b) 2x – y – 10 = 0 (c) 2x + y – 10 = 0 (d) x – 2y + 10 = 0 14. If x represents the age of father and y represents the present age of the son, then the statement for ‘present age of father is 5 more than 6 times the age of the son’ in terms of mathematical equation is (a) 6x + y = 5 (b) x = 6y + 5 (c) x + 6y = 5 (d) x – 6 = 5 15. Equation of a line passing through origin is (a) x + y = 1 (b) x = 2y – 4 (c) x + y = 0 (d) y = x – 1 16. The condition that the equation ax + by + c = 0 represents a linear equation in two variables is (a) a ≠ 0, b = 0 (b) b ≠ 0, a = 0 (c) a = 0, b = 0 (d) a ≠ 0, b ≠ 0 17. The maximum number of points that lie on the graph of a linear equation in two variables is. (a) two (b) definite (c) infinitely many (d) three 18. Straight line passing through the points (-1, 1), (0, 0) and (1, -1) has equation (a) y – x (b) x + y = 0 (c) y = 2x (d) 2 + 3y = 7x Loading …
