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Secespitus · Answer 1 · 2018-07-12T08:56:05+0000

hello :
Hello:
this line an equation is : y = ax+b
the slope is a : a×(4/7) = -1......( perpendicular to a line : y =4/7x-3 with a slope of 4/7)
a = -7/4 y=(-7/4)x+b

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