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 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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