Question

if a line is perpendicular to another line, does that make that slope negative instead of positive or vice versa?
so a line perpendicular to \[y=-\frac27 x-5\]
would be \[y=\frac27 x-5\]

Answer 1

@Saikam

Answer 2

@Callisto

Answer 3

You have to switch the fraction also. It's called the "negative reciprocal".

For example, the perpendicular slope to -2/7 would be the negative reciprocal of -2/7 which is 7/2

Answer 4

oh ok
Thanks!