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4-30.

Consider the graphs of and at right.    Homework Help ✎

  1. Write an equation that you could solve using points and . What are the solutions to your equation? Substitute them into your equation to show that they work.

    Set and equal to each other: 

  2. Are there any solutions to the equation in part (a) that do not appear on the graph? Explain.

    Solve the equation for .

  3. Write an equation that you could solve using point . What does the solution to your equation appear to be? Again, substitute your solution into the equation. How close was your estimate?

    Set equal to .

  4. What are the domains and ranges of and ?

    Domain of : All real numbers

    Range of : All real numbers

    Domain of : All real numbers

    Range of 

graph