Question

Solve the following system of linear equations by graphing.

3x-2y=12

7x+2y=8

Answer 1

3x - 2y = 12
7x + 2y = 8
10x = 20
10 10
x = 2
3(2) - 2y = 12
6 - 2y = 12
+6 +6
-2y = 18
-2 -2
y = -9
(x, y) = (2, -9)