# Math Help - Determine the equation of the line of symmetry of the quadratic function ?

1. ## Determine the equation of the line of symmetry of the quadratic function ?

Determine the equation of the line of symmetry of the quadratic function given bellow.

The equation of the line of symmetry is of the form x = k. What is the value of k?

How do I go about solving this?

-Thanks

2. Originally Posted by eliteplague
Determine the equation of the line of symmetry of the quadratic function given bellow. <<<<< where or why?

The equation of the line of symmetry is of the form x = k. What is the value of k?

How do I go about solving this?

-Thanks
I'm guessing:

The general form of the equation of the function is

$y = a(x-k)^2+h$

where k is the x-coordinate of the vertex and h is the y-coordinate of the vertex.