• Last week – Defining Functions
• Did you complete the Lesson 1 Quiz?
January 21st – Semester 1 Closes!!!!
Housekeeping
Unit 1: Lesson 2
Evaluating Functions
Evaluating a function is similar to evaluating an expression
Examples:
Evaluate 8 + v for v = 8.
Evaluate 49 − 𝑦2 for y = 5
Important Rules to remember:
Exponents – Squaring a negative
Adding and Subtracting Integers
Order of Operations
Need more
practice???
Use the following function rule to find h(-5).
g(x) = 6 – (-5)
Use the following function rule to find g(-4).
g(x) = -3 + x
Need more
practice???
Use the following function rule to find f(-10).
f(x) =
−2𝑥
5
+ 𝑥
Use the following function rule to find f(4).
f(x) = −𝑥 + −2 − 𝑥 ÷ 𝑥
Use the following function rule to find f(3).
f(x) = 9 ÷ 𝑥2
+ 2 − 2𝑥
Evaluating functions   basic rules

Evaluating functions basic rules