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)