Question

Solve the system of equations graphically, 2x-y=-7, 2x+y=-1

Answer 1

well you need to draw the 2 lines

you can either find the intercepts or use a table of values

x | -1 | 0 | 1
-------------------------
2x -y = -7 | 5 | 7 | 9
--------------------------
2x + y = 1 | 3 | 1 | -1

you have ordered pairs for each line... plot the 3 points and draw a line.

then find the point of intersection.

hope it helps.