Graph. -4x=-80 use the graphing tool to graph the line. use the intercepts when drawing the line. if only one intercepts exists, use it and another point to draw the line

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.