SOLUTION: find the slope of a line perpendicular to the line f(x)=-5x+9

Question 224551: find the slope of a line perpendicular to the line f(x)=-5x+9
Answer by drj(1380) (Show Source): You can put this solution on YOUR website!
Find the slope of a line perpendicular to the line f(x)=-5x+9

Step 1. Two lines are perpendicular when their slopes are equal to -1. In equation form where m1 is the given slope and m2 is the slope of the perpendicular line.

Step 2. The given line is expressed in slope-intercept form given as y=mx+b where m is the slope and b is the y-intercept when x=0 or at point(0,b). Therefore, this line has a slope m1=-5

Step 3. Then or after dividing -5 to both sides of the equation.

Step 4. ANSWER: The slope of the perpendicular line is .

I hope the above steps and explanation were helpful.

For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.

And good luck in your studies!

Respectfully,
Dr J
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