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.

Let's do another one...

Write a function that would represent this relation.

Last one together...

Write a function that would represent this relation.

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.