we see that y = -3x-3
substitute that into the other euation to get
-3x-3 = 2x+7
-5x = 10
x = -2
so, y = -3(-2)-3 = 3
check to make sure (-2,3) solves both equations.
Solve the following system using the substitution method:
3x + y = -3
y = 2x + 7
3 answers
3x + y = -3
y = 2x + 7
3x + 2x + 7 = -3
5x = -10
x = -2
y - (2 * -2) + 7
y = 7 - 4
y = 3
y = 2x + 7
3x + 2x + 7 = -3
5x = -10
x = -2
y - (2 * -2) + 7
y = 7 - 4
y = 3
3x+y=3
Y=2x-7
Y=2x-7