Question

On which of the following lines does point (-8,31) lie?

A. y=-4x-1
B. y=-3x-9
C. y=x+4
D. y=-2x-1

Answer 1

the answer is A.
..............

Answer 2

A. y = - 4x - 1

because

subtitute x = - 8 to the equation:

-4· (-8) - 1 = 32 - 1 =31 ⇒ (-8; 31)