Question

Determine which ordered pair is a solution of Y=2x+7

Answer 1

The answer is a. (-4, -1).

Answer 2

Each ordered pair represents (x,y), so to find the correct answer simply plug in the values of x and y into the formula and see if the equation holds.

Try (-4, -1):
$y=2x+7$
$-1=2(-4) + 7$
$-1 = -8+7$
$-1=-1$  → and that is true, so option (a) is the answer.