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Linear Functions There are three different ways to write linear functions. They are slope-intercept, point-slope, and standard form. There are certain situations where it is better to use one way than another to solve a problem. It is important to understand and comprehend the mechanics of these three forms so that you know what form to use when solving a problem. The first form, point-slope, is written as y-y1=m(x-x1). M is the slope …

…times 4 equals 20. In order to find the y-intercept you would cover up the 4x and find out what times 5 equals 20. When you are familiar with the three ways of writing linear functions it is easy to write an equation and graph a line. It is important to know what form to use so that you can obtain your results easily and accurately. Although they all serve the same purpose, each equation cannot always be used.