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If , find the value of the expressions in parts (a) through (c) below. Then complete parts (d) through (f). B-97 HW eTool (Desmos). 

  1. What value of gives ?

  2. Where does the graph of this function cross the -axis? The -axis?

  3. If , find .

Substitute for and simplify.

Refer to part (a).

Refer to part (a).

Substitute for and solve for .

A function crosses the -axis at , and a function crosses the -axis at .

Use the eTool below to find the value of each expression.
Click the link at right for the full version of the eTool: CCA2 B-97 HW eTool