Question

Determine which ordered pair is a solution of y = 2x – 3.

A. (–2, 7)
B. (0, 3)
C. (–4, –11)
D. (5, –7)

Answer 1

Well, the thing to do is just check each and every one of them, substitute the first number for x, and the second value for y.

for instance, checking choice A
(-2, 7)
replace x with -2 and y with 7
7 = 2(-2) - 3 = -7
7 = -7
Which is not true. So A is not the answer. Do this for the other choices.