Question Solve the equation r=4 Evaluate 912=3rCancel out the common factor 3 34=3rSwap the sides of the equation 3r=34Multiply both sides of the equation by 3 3r×3=34×3Solution r=4 Show Solution Rewrite the equation x2+y2=16 Evaluate 912=3rCancel out the common factor 3 34=3rSimplify the expression 34=31rMultiply both sides of the equation by LCD 34×3=31r×3Simplify the equation 4=31r×3Simplify the equation 4=rRewrite the expression −r=−4Divide both sides of the equation by −1 r=4Square both sides of the equation r2=42To covert the equation to rectangular coordinates using conversion formulas,substitute x2+y2 for r2 x2+y2=42Solution x2+y2=16 Show Solution Graph