The Reasons Why Slope Intercept Form is Used More!

The slope-intercept form of a linear equation is the most useful and widely used for several reasons. Every linear equation (of a non-vertical line) has a unique slope- intercept form. Linear functions are also defined using slope-intercept form. Also, this form is what we use when graphing a line with a graphing calculator!

Although slope-intercept form is used more, using point-slope form can be extremely helpful when doing problems that ask: Write an equation that goes through the point (7,2) that is parallel to 3x-y=8. It is more helpful this way because you don't have to go through the trouble of finding out what the x and y intercepts are through plugging in for zero!