Question Function Find the domain Determine if even, odd or neither y∈R Evaluate x=20ySeparate the function into parts to determine the domain of each part 20ySolution y∈R Show Solution Solve the equation y=20x Evaluate x=20ySwap the sides of the equation 20y=xDivide both sides 2020y=20xSolution y=20x Show Solution Rewrite the equation r=0θ=arctan(201)+kπ,k∈Z Evaluate x=20yMove the expression to the left side x−20y=0To convert the equation to polar coordinates,substitute x for rcos(θ) and y for rsin(θ) cos(θ)×r−20sin(θ)×r=0Factor the expression (cos(θ)−20sin(θ))r=0Separate into possible cases r=0cos(θ)−20sin(θ)=0Solution More Steps Evaluate cos(θ)−20sin(θ)=0Move the expression to the right side −20sin(θ)=0−cos(θ)Subtract the terms −20sin(θ)=−cos(θ)Divide both sides cos(θ)−20sin(θ)=−1Divide the terms More Steps Evaluate cos(θ)−20sin(θ)Use b−a=−ba=−ba to rewrite the fraction −cos(θ)20sin(θ)Rewrite the expression −20cos−1(θ)sin(θ)Rewrite the expression −20tan(θ) −20tan(θ)=−1Multiply both sides of the equation by −201 −20tan(θ)(−201)=−(−201)Calculate tan(θ)=−(−201)Multiplying or dividing an even number of negative terms equals a positive tan(θ)=201Use the inverse trigonometric function θ=arctan(201)Add the period of kπ,k∈Z to find all solutions θ=arctan(201)+kπ,k∈Z r=0θ=arctan(201)+kπ,k∈Z Show Solution Graph