remember you can do anything to an equation as long as you do it to both sides
notice that they both equatl y
therefor they are equal
-3x+8=y=-5x-2
-3x+8=-5x-2
add 5x to both sides
2x+8=-2
minus 8 from both sides
2x=-10
divide by 2
x=-5
plug in -5 for x in any equation to evaluate y
y=-3x+8
y=-3(-5)+8
y=15+8
y=23
the solution is
x=-5
y=23
(-5,23)
