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OpenStudy (anonymous):
find the slope of the line perpendicular to the line through the points (18,9) and (9,2)
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OpenStudy (mertsj):
Can you find the slope of the line between the two given points?
OpenStudy (anonymous):
yes just not sure how to
OpenStudy (mertsj):
Subtract the y values. Subtract the x values. put the first number over the second. That is the slope.
OpenStudy (mertsj):
What did you get?
OpenStudy (anonymous):
-7/9 but it is perpendicular
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OpenStudy (mertsj):
Did you do the subtraction in the same order?
OpenStudy (mertsj):
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