the graphs of the three equations below form a triangle. find the coordinates of the triangle's vertices.

Question

4x+y=1
2x-y=5
3y+3x=12

Answer 1

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