yaboiizav yaboiizav

01-07-2017
Mathematics

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Line E passes through the points (-3,4) and (2,7). what is the slope of a line perpendicular to line E?

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ghanami ghanami

05-07-2017

Hello : let A(-3,4) B(2,7)
the slope is : (YB - YA)/(XB -XA)
(7-4)/(2+3) = 3/5
the slope of a line perpendicular to line E is : a
a×3/5 = -1
a = -5/3

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