Question

10. If x= a, y = b is the solution of the equations x + y = 5 and 2x – 3y = 4, then the values of a and bare
respectively
[
(a) 6,-1 (b) 2,3 (c) 1, 4 (d) 19/5,6/5
11. The graph of x = -2 is a line parallel to the
[
(a) x-axis (b) y-axis (c) both X- and y-axis (d) none of these
12. The graph of y = 4x is a line
(a) parallel to x-axis (b) parallel to y-axis (c) perpendicular to y-axis (d) passing through the orig
13. The graph of y = 5 is a line parallel to the
(a) x-axis (b) y-axis (c) both axis (d) none of these
14. Two equations in two variables taken together are called
[
(a) linear equations (b) quadratic equations (c) simultaneous equations (d) none of the
15. If am bl then the system of equations ax + by = c, 1x + my = n, has
[
(a) a unique solution (b) no solution (c) infinitely many solutions (d) none of these​

Answer 1

Answer:

10. (d)

11. (b)

12. (d)

13. (a)

14. (a)

15. a