Asked by kms

the graphs of the three equations below form a triangle. find the coordinates of the triangle's vertices.
4x+y=1
2x-y=5
3y+3x=12
Answered by Steve
solve the equations in pairs:

4x+y=1
2x-y=5
intersect at (1,-3)

Now do the same for the other pairs:

4x+y=1
3y+3x=12

2x-y=5
3y+3x=12
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