You may want to review solving linear equations for one variable in terms of another first.

Most lines (actually, any line that isn't vertical) can be
written as *y* = *mx* + *b*, where *m*
and *b* are numbers. The number *m* is called
the *slope* and the number *b* is called
the * y-intercept*. If you're given the equation of a
line, and need to find the slope and the

Here are some things to keep in mind.

- If there's nothing in front of the
*x*, then the slope is 1. - If there's no
*x*at all, just a number, then the slope is 0 and the*y*-intercept is that number. - If there's nothing added or subtracted, then
the
*y*-intercept is 0.