Question

Solve: y = 3x - 4
y = x + 2

Answer 1

y = 5

Explanation:

Isolate x to plug in to other equation

y = x + 2

-y-x -y-x

(- x = -y + 2) / -1

x = y - 2

Plug into other equation

y = 3(y-2) - 4

Distribute

y = 3y-6-4

y = 3y-10

-3y -3y

(-2y = -10)/-2

y = 5