Pre-calculus Question

User Generated

GurYrneavatYrnu

Mathematics

Description

Show that the line through (2, 3) and (7, -7) is perpendicular to the line through (3, 3) and (-2, 2).

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Explanation & Answer

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If lines are perpendicular then the multiplication of their slopes = -1

line 1 slope = change in y/ change in x = (3--7)/2-7 = 10/-5 = -2

line 2 slope = 3-2/3--2=1/5

-2*1/5 = -2/5

The lines are therefore not perpendicular

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