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What is the slope of a line that that is perpendicular to a line that passes throudg...
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High School Teacher
First we will find the slope of the line that passes through the points (-2,-2) and (1,3)
==>The slope (m1)= (y2-y1)/(x2-x1) = (3-(-2))/(1-(-2)) = 5/3
Now let the slope of the perpendicular line be m2.
Then we know that the product of the slopes of two perpendicular lines is -1.
==> m1 X m2 = -1
But we know that m1 = 5/3
==> 5/3 X m2 = -1
Now we will multiply both sides by 3/5
==> m2 = -1 (3/5) = -3/5
Then, the slope of the perpendicular line is -3/5
Posted by hala718 on December 19, 2011 at 7:29 AM (Answer #1)
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