M7H 9.1 Functions and Function Rules

M7H 9.1 Functions

Includes writing a function for a table.

Let's practice this together...

Write a function that would represent this relation.

Fill in the Blank

Write a function that would represent this relation.

Fill in the blank. Leave NO SPACES.

y = ________

Let's do another one...

Write a function that would represent this relation.

Fill in the Blank

Write a function that would represent this relation.

Fill in the blank. Leave NO SPACES.

y = ________

Last one together...

Write a function that would represent this relation.

Fill in the Blank

Write a function that would represent this relation.

Fill in the blank. Leave NO SPACES.

y = ________

Now it's your turn to practice.

Multiple Choice

Which function represents this relation?

• $y=3x$

• $y=x+5$

• $y=5x$

• $y=x+3$

Multiple Choice

Which function represents this relation?

• $y=\frac{x}{3}$

• $y=x-4$

• $y=\frac{x}{2}$

• $y=x+4$

Multiple Choice

Which function represents this relation?

• $y=7x$

• $y=3x$

• $y=\frac{x}{3}$

• $y=\frac{x}{7}\text{}$

Multiple Choice

Which function represents this relation?

• $y=3x$

• $y=x-12$

• $y=\frac{x}{6}$

• $y=\frac{x}{3}$

Multiple Choice

Which function represents this relation?

• $y=x+7$

• $y=2x$

• $y=x+5$

• $y=2.4x$

Review

9.1 Functions

Multiple Choice

Is this table a function or not a function?

• Function

• Not a Function

Multiple Choice

Which ordered pair could you add to the following list of points to create a function? (3, 5) (4, 9) (2, 5)

• (3, 7)

• (4, 1)

• (1, 9)

• (2, 6)

Multiple Choice

Which graph is not a function?

• Graph A

• Graph B

• Graph C

• Graph D

Multiple Choice

What is the range of the following relation:

(9, –2) (4, 3) ( 8, 10) (–4, 8)

• {–4, 4, 8, 9}

• {–2, 3, 8, 10}

• {(9, –2) ( 4, 3)}

• {(8, 10) (–4, 8)}

Multiple Choice

If $f\left(x\right)=3x-9$ , find  $f\left(5\right)$  .

• 6

• 16

•  –4

• 24

Multiple Choice

If $f\left(x\right)=-2x-3$ , find  $f\left(7\right)$  .

• 11

• –11

•  17

• –17

Multiple Select

Select all the relations that are a function.