SOLUTION: y=3x+13 2x=y-9 find x and y

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Question 256931: y=3x+13
2x=y-9
find x and y
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1.y=3x%2B13
2.2x=y-9
Substitute 1 in 2 and solve for x.
2x=y-9
2x=3x%2B13-9
2x=3x%2B4
-x=4
x=-4
Then use eq. 1 to solve for x.
y=3x%2B13
y=-12%2B13
y=1