put these polar equations into cartesians form:

Question

1) theta=135 degrees
2)rcostheta=-1

for #1 is it like: (-1,1)?
and for #2, X=-1, but i cant find y, any help is appreciated

The slope should be sin(theta)/cos(theta) and the intercept is the origin.

x=r*cos(theta)
If r=1 we have x=cos(theta)