### Home > CCA > Chapter 9 > Lesson 9.3.1 > Problem 9-76

9-76.

For the quadratic function

*f*(*x*) =*x*^{2}+ 6*x*+ 11:Use the idea of completing the square to write it in graphing form.

State the vertex and sketch a graph of the parabola.

Use the graph to explain why the equation

*x*^{2}+ 6*x*+ 11 = 0

Use the Math Notes box.

In the standard equation, the vertex is (*h*, *k*).

(−3, 2)

Are there any *x*-intercepts?