Having huge troubles with this whole section
Also, does anyone know any good math books for post-Algebra II? Math is cool when I get it, which is why I want to get it.
you take y=-5x and plug that into the first equation. you have two choices with this:
or, if you solve for x in the second equation (and get x=-(1/5)y)
the first way is easier so lets stick to that.
now take this value for x and plug it into the second equation of our original pair.
hope this helps.