Question

Use the substitution method to solve the system of equations. Choose the correct ordered pair. 2x + 4y = 14 x = 3

Answer 1

Because we have x = 3, we can substitute it. But first, let's convert 2x + 4y = 14 into y-slope intercept form.

2x + 4y = 14
Subtract 2x from both sides.
4y = -2x + 14
Divide both sides by 4.
y = -1/2x + 3.5

Now substitute.

y = -1/2(3) + 3.5
y = -1.5 + 3.5
y = 2

(3, 2)