FUNCTIONS B8

Find the axis of symmetry for F(x) = 3x² - 24x + 3

Solution

a=3, b=-24

Axis of symmetry = -b/2a

                               =  -(-24)

                                    2 x 3

                               =    24

                                      6

                               =    4

                                      

Hence the axis of symmetry is 4