4.4.4 Writing a Rule Using Function Notation
4.4.4 • Writing a Rule Using Function Notation
Cool Down
1.
Complete the table with the perimeter of a square for each given side length.
| side length (inches) | perimeter (inches) |
|---|---|
|
0.5 |
a. ______ |
|
7 |
b. ______ |
|
20 |
c. ______ |
a. ______
b. ______
c. ______
a. 2
b. 28
c. 80
2.
Write a rule for a function, , that gives the perimeter of a square in inches when the side length is inches.
Compare your answer:
3.
What is the value of ? What does it tell us about the side length and perimeter of the square?
Compare your answers:
. It tells us that when the side length of the square is 9.1 inches, the perimeter of the square is 36.4 inches.