Question

Where does x=3-3y and x+3y=-6 intersect on a graph?

Answer 1

Solve both equations for x and then y. Then set both of the equations equal to each other and solve for the remaining variable.

Answer 2

The lines have the same slope and are parallel. So, they do not intersect on a graph.

See graph at:

http://www.wolframalpha.com/input/?i=%28x+%3D+3+-+3y%29+and+%28x+%2B+3y+%3D+-6%29

Answer 3

Ha. I didn't even pay any attention to the equations. Maybe I shouldn't be lazy and actually read everything.