sbewick sbewick
  • 24-02-2015
  • Mathematics
Answered

Solve the following system of linear equations by graphing.

3x-2y=12

7x+2y=8



Answer :

Panoyin
Panoyin Panoyin
  • 25-02-2015
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)
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