1. 6.3 – Square Root Functions and Inequalities
Day 1

2. Vocabulary:
Square Root Function – a function that contains the square root of a variable.
- A type of radical function.

4. Domain of Square Root Functions:
Domain: (What type of #’s can/cannot
be underneath a square root???)
• # CANNOT be negative, so…
the # (or expression) has to be > 0!

5. Range of Square Root Functions:
Range: (What type of #’s will result
from square rooting a #???)
• Answers WILL NOT be negative, so…
the y-values resulting from the
square root function have to be > 0!

6. Example 1:
Identify the domain and range of

7. Example 2:
Identify the domain and range of

9. Example 3:
Graph the function. State the domain and range.

10. Example 4:
Graph the function. State the domain and range.

11. Example 5:
Graph the function.
A. B.
C. D.

12. Ticket Out:
State the domain and range of the function. Hw – pg. 403, #13 – 16, 22 – 28 even
A. D: {x | x ≥ –1}; R: {y | y ≤ –4}
B. D: {x | x ≥ 1}; R: {y | y ≥ –4}
C. D: {x | x ≥ –1}; R: {y | y ≤ 4}
D. D: {x | x ≥ 1}; R: {y | y ≤ 4}