brianluong00
brianluong00 brianluong00
  • 10-09-2017
  • Mathematics
contestada

The equation of line n is 8x - 14y + 3 = 0.
What is k if the graphs of n and kx - 7y + 10 = 0 are perpendicular?

Respuesta :

3mar 3mar
  • 10-09-2017


For perpendicular lines:
"Their slopes' product is -1"


As these lines should be parallel, so their slopes would be the same.

Slope of line n:
8/14 = 4/7


Slope of the other line:
k/7

Equating them:
4/7 *  k/7 = -1
4k / 49 = -1

4k = -49

k = - 49/4 = -12.25

This means k= - 12.25


Sorry for confusion





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