Question Function Find the vertex Find the axis of symmetry Evaluate the derivative Load more (0,0) Evaluate a=3r2Find the r-coordinate of the vertex by substituting a=3 and b=0 into r = −2ab r=−2×30Solve the equation for r r=0Find the y-coordinate of the vertex by evaluating the function for r=0 a=3×02Calculate More Steps Evaluate 3×02Calculate 3×0Any expression multiplied by 0 equals 0 0 a=0Solution (0,0) Show Solution Solve the equation r=33ar=−33a Evaluate a=3r2Swap the sides of the equation 3r2=aDivide both sides 33r2=3aDivide the numbers r2=3aTake the root of both sides of the equation and remember to use both positive and negative roots r=±3aSimplify the expression More Steps Evaluate 3aTo take a root of a fraction,take the root of the numerator and denominator separately 3aMultiply by the Conjugate 3×3a×3Calculate 3a×3Calculate More Steps Evaluate a×3The product of roots with the same index is equal to the root of the product a×3Calculate the product 3a 33a r=±33aSolution r=33ar=−33a Show Solution Graph