Standard form is another way to describe a line. The basic equation for standard form is ax+by=c. The values a,b, and c are all whole numbers that give the line its properties. "A" should always be positive, "a" and "b" can not be 0. To change a line that is in slope-intercept form (y=mx+b) to standard form you need to perform inverse operations. Subtract "mx" from both sides of the equation. Now you should have "-mx+y=b". Next you will need to make sure that "m" (a) is positive. You will multiply the entire equation by -1 and you will get "mx-y=-b". If applicable make any fractions whole numbers by multiplying the entire equation by the denominator. Now your equation is in standard form! Go to the next worksheet for some practice.