AXIS OF SYMMETRY-2

Find the axis of symmetry for F(x) = 7x² + 28x + 8

Solution

a=60, b=4

Axis of symmetry = -b/2a

                                   =  -(28)

                                       2 x 7

                                   =    -28

                                        14

                                   =   -2

                                         

Hence the axis of symmetry is -2

TRY THIS...............

Find the axis of symmetry for F(x) = 15x² + 300x + 8