### Home > PC3 > Chapter 4 > Lesson 4.1.1 > Problem 4-7

4-7.

QUADRATIC FUNCTIONS

Set the right side of each equation equal to .

Let

. What are the roots of this quadratic function? Give exact answers.Let

. What are the roots of this quadratic function? Give exact answers.Let

. What are the roots of this quadratic function? Give exact answers.The graph of a quadratic function crosses the

-axis at. Write a possible equation for this function. If

, is an -intercept, thenis also an -intercept.Recall that in parts (a) through (c), you let

and solved. One method here is to work backwards from that process.Step 1: