Question 42

What is the slope of the line perpendicular to the line passing through the points (-5 , 1) and (-2 , 0)?

Solution

Slope of the line passing through the points (-5 , 1) and (-2 , 0) = $$\frac{0-1}{-2+5}=\frac{-1}{3}$$

Let slope of line perpendicular to it = $$m$$

Also, product of slope of two perpendicular lines = -1

=> $$m\times \frac{-1}{3}=-1$$

=> $$m=(-1)\times(-3)=3$$

=> Ans - (B)

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