# How do you find the axis of symmetry, graph and find the maximum or minimum value of the function #y = 2x^2 - 6x - 36#?

##### 1 Answer

Jul 25, 2017

The function has a minimum at

Axis of symmetry

#### Explanation:

Given -

#y=2x^2-6x-36#

#dy/dx=4x-6#

#(d^2y)/(dx^2)=4>0#

#dy/dx=0 =>4x-6=0#

#x=6/4=1.5#

At

The function has a minimum at

Axis of symmetry

Graph -