Question

Given x=0, y=-1/2 find the missing r. Please help!

Answer 1

is this the one with \[r = \sqrt{x^2 + y^2}\]

Answer 2

I'm not sure but the options are:
a. +/1/2
b. 1/4
c. 1/2
d. -1/2

Answer 3

yup definitely that one

Answer 4

use the formula i gave

Answer 5

C.!

Answer 6

yup

Answer 7

one question though...is this that polar coordinate thingy lesson?

Answer 8

Hmmm, nope. :/