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

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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