Find the Slope of a Perpendicular Line y=-9x+7

Math
Use the slope-intercept form to find the slope.
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The slope-intercept form is , where is the slope and is the y-intercept.
Using the slope-intercept form, the slope is .
The equation of a perpendicular line to must have a slope that is the negative reciprocal of the original slope.
Simplify the result.
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Move the negative in front of the fraction.
Multiply .
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Multiply by .
Multiply by .
Find the Slope of a Perpendicular Line y=-9x+7
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