Question

determine if the two lines are perpendicular
y=4x-9
3y=5-x

Answer 1

If the slopes are reciprocals of each other then the lines are perpendicular.

It'd be easier to get them in slope intercept form first

Answer 2

Opposite reciprocals*

Answer 3

thats the part i dont understand how to do

Answer 4

yes and when you multiply the slopes they must be equal to -1

Answer 5

how do i find the slope of two equations? does y=mx+b apply here?

Answer 6

The first one is already in slope intercept form and the second one is y=-x/3+5/3
The slope of the first one is m in the slope intercept form so it'd be 4
The slope in the second one is -1/3.
Are they opposite reciprocals?

Answer 7

no

Answer 8

^that's your answer bud

Answer 9

thank you

Answer 10

np