### Home > AC > Chapter 3 > Lesson 3.1.7 > Problem 3-66

3-66.

For each rule below, make a table of - and

*-values and then graph the rule on graph paper. Label each graph with its equation.*

Substitute positive and negative values for

and solve for.

Compare the graphs. What do you notice?

What are the shapes of the graphs of part (a) and part (b)?

The

graph points upward and thegraph points downward.For the graph of

, estimate the-values corresponding to.Estimate the

-value where the lineintersects the parabola. (See graph for the line)For the graph of

, estimate the-values corresponding to.See the hint in part (d).

Complete the tables in the eTool below.

Click the link at right for the full version of the eTool: *AC 3-66 HW eTool*