17owensbyst
17owensbyst 17owensbyst
  • 03-04-2017
  • Mathematics
contestada

A line through which two points would be perpendicular to the line y=4/7x - 3

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ghanami
ghanami ghanami
  • 05-04-2017
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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A 40 inch board is to be cut into three pieces so that the second price is 4times as long as the first piece and the third piece is 5 times as long as the first