Precalculus Polar Coordinates-- PLEASE Help!!

Question

Find the equation in polar coordinates of the line through the origin with slope 1/7 .

 

θ=

Any help would be really appreciated!!!!!!!! I am very confused by the concept!

Answer 1

The equation in rectangular co-ordinates is y = x/7

To change to polar co-ordinates, the equations necessary are r = sqrt(x² + y²) and θ = arctan(y/x).