Graphical Behavior
Equations from Zeros
Example 2
Write a function in factored form that has roots r = ?1, r = 1, and r = 2, and has another point at (0, 10).
Step 1. Turn the roots into factors.
Therefore, (x - 1), (x - 2), (x + 1) are the factors.
Step 2. Write a function, include the a-value.
Step 3. Use the other point given to determine the a-value.
Step 4. Write the function rule.
