Lesson Equation of a Line

This Lesson (Equation of a Line) was created by by rapaljer(4671)

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About rapaljer: Retired Professor of Mathematics from Seminole State College of Florida after 36 years.

Write the equation of the line with x-intercept (12,0)and y-intercept (0,4).

The equation of a line can be written in slope-intercept form, y=mx+b, where "m" is the slope and "b" is the y-intercept of (0,4). Since you are given the y-intercept, all you need is the slope, which is m=%28RISE%29%2F%28RUN%29

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In this case, m=%284-0%29%2F%280-12%29=4%2F-12=-1%2F3

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The equation of the line is therefore: y=%28-1%2F3%29x%2B4

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R^2 Retired

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