Lesson Equation of a Line
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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=(RISE)/(RUN)}}}. In this case,{{{m=(4-0)/(0-12)=4/-12=-1/3}}} . The equation of the line is therefore: {{{y=(-1/3)x+4}}}. R^2 Retired
