In order use the slope - intercept formula you must solve for what variable?

Y

The slope intercept formula is one of many different expressions that define a line. The general formula for a line is

ax + by + c = 0

To change the expression to the slope intercept form, you solve for y like this:

ax + by + c = 0

Subtract ax from both sides

by + c = - ax

subtract c from both sides

by = - ax - c

divide both sides by b

y = - (a/b) x - c/b