Question

17. What is the value of the determinant,
A) 1
18. Which of the following is the solution of the solution of the simultaneous equations x + 3y = 8 and
AX54)
C)(54)
D)(5,4)
19. If x=5 and y = 3 are the solution of 3x + ky 3, then the value of ks
A4
D)-2
20. What is the value of . if the point (m, 4) lies on the graph of the equation
, *y?
A)2
B)-2
C)4
D)-4
21. If the point (3-D) lies on the graph of the equation ax + 7y=2, then what is the value of a?
A)6
B)3
D)
22. For simultaneous equation in x and y, if Dx = 39, Dy = 26 and D = 13, then what is the value of x?​

Answer 1

Step-by-step explanation:

19. put value of x and y in equation

then k=-4