Question

The equation of line AB is (y-3) = 5 (x - 4). What is the slope of a line perpendicular to line AB?

Answer 1

-5

5

-1/5

1/5

Answer 2

@AntiNode

Answer 3

distribute 5-> 5x-20
then move the 3 on to the other simplify, so that you will have y=mx+b...
then m=....

Answer 4

m = 5?

Answer 5

nope...*Remember Perpendicular to the line

Answer 6

1/5..

Answer 7

You are correct that the slope of the given line is 5.
Now you need the slope of the perpendicular.

Answer 8

opposite reciprocal

Answer 9

The slopes of perpendicular lines are negative reciprocals.
That means flip the slope and change the sign.

Answer 10

1/5 is the reciprocal of 5, but you need the negative of the reciprocal.

Answer 11

-1/5

Answer 12

Correct

Answer 13

Thanks a lot..

Answer 14

You're welcome.