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Warm-Up: February 13, 2012

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7-7 Skills Practice Answers

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7-7 Practice Answers

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Homework Questions?

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SQUARE ROOT FUNCTIONS AND INEQUALITIES Section 7-9

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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.

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Graphing Square Root Functions 1. Set the radicand ≥ 0, and solve for x. This is the domain. 2. Set up a T-table that starts with the x-value you found in step Plot the points from the T-table and connect the dots.

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

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

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

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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.

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