Writing Linear Equations

by John
(U.S.)

What is the equation of a line with a slope of -2 and a y-intercept of 8 ?

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Writing Linear Equations

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Aug 11, 2010
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by: Karin

Hi John,

If you know the slope and y-intercept of a line, then we will write an equations in slope intercept form.

Slope Intercept Form is: y = mx + b

m is the slope of the line and b is the y-intercept.

Therefore, we will substitute -2 for m and 8 for b.

y = mx + b
y = -2x + 8 is the equation for this line.

For more examples on writing equations in slope intercept form, please visit:
http://www.algebra-class.com/writing-equations.html

Hope this helps,
Karin

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