Question

PLEASE HELP!

Answer 1

the equation of line AB is y=-1/3-1. Write an equation of a line perpendicular to line AB in slope-intercept form that contains point (4,-5)

Answer 2

Perpendicular slope = Negative reciprocal

Answer 3

So negative of -1/3 = 1/3

reciprocal is 1/3 = 3/1 = 3

so the slope is 3

Now we need the rest of the equation

y = 3x + b

Plug the ordered pair

-5 = 3 * 4 + b

Can you solve for b?

Answer 4

-5=12+b
move the 12
7=b
?

Answer 5

-5 = 12 + b

Subtract 12

-5 - 12 = b

Answer 6

Oh whoops I did that wrong
So it's
-17?

Answer 7

I'm sorry I'm terribly bad at math in general

Answer 8

is that correct?

Answer 9

Lol it's alright ^_^

Yes - 17

so b = -17

Now we have the whole line

y = 3x - 17

Answer 10

That's what I would put as the equation?

Answer 11

Yes :)

Answer 12

Thank you!(:

Answer 13

Can I borrow you for one more question?

Answer 14

Can you wait a few mins? o.o

Gotta do something quick :P

Answer 15

I sure can (: I'll make a new question and tag you (:

Answer 16

Alright ^_^