Question

Convert theta= 3pi/4 to rectangular form.

A. y= -1
B. y= 1
C. y= x
D. y= -x
E. x= -1

Answer 1

If you are doing it on edge it is x+y=0

Explanation:

x+y=0 when you solve for y it equals -x( y=-x)

Answer 2

`\theta=(3\pi)/(4)=\pi-(\pi)/(4)\\\\y=\tan\theta x\\\\y=\left(\tan(3\pi)/(4)\right)x\\\\y=\left(\tan\left(\pi-(\pi)/(4)\right)\right)x\\\\y=\left(\tan\left(-(\pi)/(4)\right)\right)x\\\\y=\left(-\tan(\pi)/(4)\right)x\\\\y=-1x\\\\\boxed{y=-x}\to\boxed{D.}`