FUNCTIONS B4

Find the axis of symmetry for F(x) = 3x² - 4x + 7

Solution

a=3, b=-4

Axis of symmetry = -b/2a

                               =  -(-4)

                                    2 x 3

                               =    4

                                     6

                               =     2

                                      3

Hence the axis of symmetry is ²/3