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what are your answers?

Never mind I dont have the last two...I ended up loosing my answers..

Parallel lines
You know they're parallel when they never intersect
|dw:1436894589815:dw|

Perpendicular
the lines intersect at a 90 degree angle
|dw:1436894638111:dw|

does that help for the last 2?

Yeah but the first two im really struggling on

finding the distance on a coordinate plane: distance formula

yes i know that lol

2) \(\dfrac{rise}{run}\)

Ok thank you that helps me alot

Could you explain the distance formula really quick to me though?

sure
\(\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}\)

if you have these ordered pairs
(10,0) and (5,4)
\(y_2=4\\y_1=0\\x_2=5\\x_1=10\)

\(\sqrt{(4-0)^2+(5-10)^2}\\ \sqrt{4^2+(-5)^2}\\ \sqrt{16 + 25} \\ \sqrt{ 41} = 6.4\)

^ that's how you do it

Thank you again

yw