Question

Which of the following points lies on the line whose equation is y = 2x - 3?


(0, 3)
(1, -1)
(-1, 4)

Answer 1

The easiest way to do this is to check each option one at at time:

A)
\[y=2x-3\]\[3=2(0)-3\]\[3=0-3\]\[3=-3\] No.

B)
\[y=2x-3\]\[-1=2(1)-3\]\[-1=2-3\]\[-1=-1\] Yes.

C)
\[y=2x-3\]\[4=2(-1)-3\]\[4=-2-3\]\[4=-5\] No.

The correct answer is B, (1,-1)

Answer 2

thanks