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

9-76.
  1. For the quadratic function f(x) = x2 + 6x + 11: Homework Help ✎

    1. Use the idea of completing the square to write it in graphing form.

    2. State the vertex and sketch a graph of the parabola.

    3. Use the graph to explain why the equation x2 + 6x + 11 = 0 has no real solutions.

Use the Math Notes box.

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

(−3, 2)

Are there any x-intercepts?