Question

I think it's D? Am I correct?
Choose the slope-intercept equation of the line that passes through the point (6, -6) and is perpendicular to y = 3x - 6.

y = 1/3x - 8

y = -3x + 12

y = 3x - 24

y = -1/3x - 4

Answer 1

Do you think you could help :) ? @precal

Answer 2

what do you know about perpendicular?

Answer 3

That they intersect, ohhh then D isn't the answer because D would be parellel

Answer 4

yes d is parallel so we know it is not d

Answer 5

perpendicular means that it has to be the opposite sign but remember to flip the number so what are you looking for?

Answer 6

We're looking for -3x? So would it be B?

Answer 7

no flip 3 it turns into 1/3 but we do need the opposite sign

Answer 8

Ohhhh then it's A?

Answer 9

no opposite of positive is negative
we need -1/3 that is what makes it perpendicular

Answer 10

So I was right it is D?

Answer 11

yes but I wanted you to know why you were correct. Now be careful they could have given you multiple equations with -1/3 you can always sub the point in to make sure it crosses that point

Answer 12

Ohhh okay :) Thanks!

Answer 13

yw