Question

40 POINTS is (4,7) a solution of equations? Explain your answer 2x+4y=36 3x-4y=-6

Answer 1

2x + 4y = 36
3x - 4y = -6
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5x = 30 
  x = 6

2x+4y=36 
2(6)+4y=36 
12 + 4y = 36
4y = 24
  y = 6

answer
(6, 6) is a solution of equations
(4,7) is NOT a solution of equations

Answer 2

using (4,7)

2(4) +4(7) = 8 +28 =36 True

3(4) - 4(7) = 12 -28 =-16 False (-16 is not -6)

 (4,7) is not a solution