y = 4x - 3 y = -x - 13 Since both equations equal y, we will just substitute both equations to equal each other. 4x - 3 = -x - 13 +x on both sides 5x - 3 = -13 +3 on both sides 5x = -10 /5 on both sides x = -2
Substitute x = -2 into one of the equations. y = -x - 13 y = -(-2) - 13 y = 2 - 13 y = -11
To check answer, plug in both x and y values into one of the equations. y = -x -13 -11 = -(-2) - 13 -11 = 2 - 13 -11 = -11
