Convert 𝑟 cos (𝜃 + 𝜋) = 8 to a rectangular equation. Then, determine the graph’s slope and y-intercept.

Answer 1

rcos(θ + π) = 8; - rcosθ = 8; x = - 8 is vertical line.

x = - 8 is rectangular equation and slope m is undefined and no y-intercept.