Question

(HELP PLEASE; need help going through this)

Determine all the values of c so that the lines cy+6x=14 and cy-2x=4 are perpendicular.

Answer 1

one approach
rewrite each line in the form y = m x + b where m is the slope
for perpendicular lines the product of the slopes is -1
set the y's equal
use substitution to determine the values of c

Answer 2

TO set it to y=mx+b form do I first divide by c?

Answer 3

it won't matter
should cancel out
product of slope = -1

m *1/m= -1 where m is the slope of the first line the slope of the perpendicular is -1/ m