2. { Chapter 7 Lesson 3 Square Root Functions and Inequalities

3.  Square Root Function- A function that contains a square root of a variable.  Square Root Inequality- An inequality that involves square roots. Vocabulary

4. Square Root Function

5. Domain of Square Root Function

6. Examples

8.  After you find first x value in your table, plug value in to equation to find first y value.  Take y value you found to start your table.  If sign in front of square root is positive, range is Y ≥ first y value in table.  If sign in front of square root is negative, range is Y ≤ first y value in table. Finding Range

9. Example

11.  Make a table  First value of table is found by setting what is underneath the square root sign equal to zero and solving for x.  Second value is determined by the domain of the equation Graphing Square Root Functions

13. Example

15.  Same as domain of functions Domain of Inequalities

16. Range of Inequalities InequalitySign in Front of √ExampleRange

17.  Graph just like it was an equation  If the sign is, graph with a dotted line  If sign is ≥ or ≤, graph with a solid line  If sign is < or ≤, shade below line  If sign is > or ≥, shade above the line Graphing Inequality

18. Example

21.  Worksheet 7-3 Homework