# Warm-Up: February 13, 2012.

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Warm-Up: February 13, 2012

Homework Questions?

Square Root Functions and Inequalities
Section 7-9

Square Root Functions A square root function is a function that contains a variable inside a square root. The inverse of a quadratic function is a square root function only if the range is restricted to nonnegative numbers.

Graphing Square Root Functions
Set the radicand ≥ 0, and solve for x. This is the domain. Set up a T-table that starts with the x-value you found in step 1. Plot the points from the T-table and connect the dots.

Example 1 Graph the function. State the domain and range.

You-Try #1 Graph the function. State the domain and range.

Assignment Page 398 #15, 21, 25 Graph each function. State the domain and range of each function.

Chapter 7 Test Thursday 20 questions
You will be allowed to use calculators and a 3”x5” index card (both sides). There will not be time to review Thursday before the test.