SOLUTION: 3x+y=5 x-2y=4

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Question 501531: 3x+y=5
x-2y=4
Answer by oberobic(2304) About Me  (Show Source):
You can put this solution on YOUR website!
3x+y=5
x-2y=4
x = 2y+4
.
substitute
.
3(2y+4) +y = 5
6y +12 +y = 5
7y = -7
y = -1
.
substitute
.
x = 2y +4
x = 2(-1) +4
x = 2
.
Graphing these is helpful to check your answer.
Convert them to slope-intercept form.
3x+y=5
y = -3x +5
.
x-2y=4
-2y = -x +4
y = x/2 -2
.
graph%28500%2C500%2C-5%2C5%2C-5%2C5%2C-3%2Ax%2B5%2Cx%2F2-2%29