how do i find the solution for -2x-2y=4 and 8y=-8x-16. Can anybody please help me?!

Question

anonymous · Answer

Graph them! The first equation needs to be in y = mx + b form. Then use something like geogebra to graph. The place they intersect is the solution.

anonymous · Answer

If you graph them the lines should be on top of each other. This is a result of the two equations being sort of different algebraic names for the same line. Since they both describe the same line, all coordinates (x,y) that satisfy $$-2x-2y=4$$aka$$8y=-8x-16$$aka$$x+y=-2$$ make up the solution. In other words,  any and all equations for the line are solutions.

anonymous · Answer

Depends if you need to solve it for x or y. If for x then isolate it on one side. If for y isolate it on one side. If you graph it you need it in either slope-intercept form or standard form.