SOLUTION: Which of the following ordered pairs is a solution of the system x+2y=8 and 2x-5y=-2?

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Question 376515: Which of the following ordered pairs is a solution of the system x+2y=8 and 2x-5y=-2?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,

No ordered pairs listed

solving the system by substitution

x+2y=8  or x = -2y + 8

2x - 5y= -2

2(-2y+8) - 5y = -2

-4y + 16 -5y = -2

18 = 9y

2 = y

solving for x

x = -2y + 8

x = -2*2 + 8

x = 4

CHECKING our Anwser

2x - 5y = -2

2*4 - 5*2 = -2