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OpenStudy (anonymous):
The line passing through points (x, 4) and (4, -5) is perpendicular to a line with a slope of -7/3. What is the value of x?
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OpenStudy (amistre64):
flip it and change it: 3/7 x,4 -4,5 ----- x-4,9 ; 9/(x-4) = 3/7 x-4 = 7(9)/3 x = 21 +4 = 25
OpenStudy (amistre64):
25,4 -4,5 ----- 21,9 ; slope = 9/21 = 3/7 3/7.-7/3 = -1 = good x = 25
OpenStudy (anonymous):
thanks LOVE (: your the best!
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