Question

how many solutions does y=2x-8 and x-y=1 have

Answer 1

This equation has one solution.

Answer 2

the two lines have different slopes, so they must intersect.

Answer 3

how many solutions is 2x+5y=9 and y=-2x+1

Answer 4

Draw two straight lines so they intersect.

Look in how places you were able to intersect them.