10. The value of k for which the system of equations

kx-y=2
6x-2y=3
Has a unique solution, is
a)=3b)≠3c) ≠0d)=0

11. The value of k for which the system of equations

2x+3y=5
4x+ky=10
Has infinite number of solutions, is
a) 1b) 3c) 6d) 0

12. The value of k for which the system of equations x+2y-3=0 and 5x+ ky+7=0 has no solution is a) 10b) 6c) 3`d) 1

13. The value of k for which the system of equations 3x+5y=0 and kx+10y=0 has a non zero solution, is a) 0b) 2c)6d)8

14. If the system of equations
2x+3y=7
(a+b)x + (2a-b)y=21
Has infinitely many solutions, then
a)a=1, b=5 b)a=5, b=1 c)a=-1, b=5 d)a=5, b=-1

15. If the system of equations
3x+y=1
(2k-1) x + (k-1) y=2k+1
Is inconsistent, then k=
a)1b)0c)-1d)2

16. If am≠bl, then the system of equations
ax+by=c
lx+my=n
a) Has a unique solutionb) has no solution
c) Has infinitely many solutionsd) may or may not have a solution

17. If 2x-3y=7 and (a+b)x-(a+b-3)y=4a+b represent coincident lines, then a & b satisfy the equation a) a+5b=0b)5a+b=0c)a-5b=0d)5a-b=0
18. The pair of linear equations 3x+2y=5; 2x-3y=7 have how many solutions:-

(A) One solution (B) Two solutions

(C) Many Solutions (D) No solution

19. When a is not equal to 0 , b=0 and c=0 then the equation ax=0or x=0 is :-

(A) X-axis (B) y-axis

(C)a line parallel to x-axis (D) a line parallel to y-axis

20. The graph y=3x is a _____________________

(A) X-axis (B)y-axis

(C) A line parallel to x-axis (D) A line passing through origin

21. The number of solutions of lines that are coincident:-

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