1. Honors Algebra II with Trigonometry Ms. Lee
Graphing Radicals
Honors Algebra II with Trigonometry
Ms. Lee

2. Essential Stuff Essential Question Essential Vocabulary
How do you graph radical functions?
Essential Vocabulary
Radical Function
Perfect Square/Cube
Domain
Range

3. Square Root Function
The square root is the inverse to the Quadratic function
The parent function is y= 𝒙

4. Domain & Square Roots
We cannot take an even root of a negative number and get a real answer.
So, to find domain, we must set the
radicand ≥𝟎.
For example, if 𝒇 𝒙 = 𝒙+𝟒 , to find the domain we would say 𝑥+4≥0 or 𝑥≥−4.
The domain is 𝐷:𝑥≥−4

5. Cube Root Function The cube root is the inverse to the Cubic function
The parent function is y= 𝟑 𝒙

6. Domain & Cube Roots
We can take an odd root of any number, positive or negative.
So the domain is always All Real Numbers

7. Homework 6.4