Question

y=-2/3+2;(9,3) and y=1/4*-2;(8,-1) what are the steps in solving this equation and what does it mean for on line to be perpendicular or another?

Answer 1

Please check for typos.

If you have a line
y = m x + b
then the line perpendicular to that will have slope = -1/m
so
y = -(1/m) x + c
and they cross at right angles