Functions Functions Functions

Are You Having Fun(ction)?

100

This word is used to describe the set of all inputs (x values) for a function.

Domain.

200

This word is used to describe the set of all outputs (y-values) of a function.

Range.

300

This word describes a relation that pairs each x value with only one y value.

Function

400

What visual test can be used to determine if a graph is a function?

Vertical Line Test.

500

Give three possible ways a function can be represented.

Graph, Mapping Diagram, Table, Ordered Pairs

Am I a function?

100

No, not a function.  It does not pass the vertical line test.

200

Yes, it passes the vertical line test.

300

Does the following table represent a function?
x      y
1      2
2      5
6      2
2      9
5      1

No, because the input (x) of 2 has two different outputs (y).

400

Does the following table represent a function?
x      y
-3    1
-1    4
0     6
2     4
5      1

Yes, there are no repeated x-values

500

Is this a function and why?

No, because x's repeat at 8.

What's my function?

100

y= 2x +1

 when x=-3 find the y value

y = -5

200

y = -8x + 2

if x=4 find y

y= -30

300

y = x² + x + 1; find y when x=-5

y = 21?

400

y= -3x² 

if x=-5 find y

y = -75

500

Find the (x) if y=10

y = 2/5x + 4

x = 15

Domain to the Range

100

List the DOMAIN:

{(-2, 4), (3, 2), (2, 10)}

{-2, 3, 2}

200

List the RANGE in

{-6, -5, -2, 3, 5}

300

{ (-5,7) , (0,0) , (2, -8) , (5, -20) }

List the domain.

{-5, 0, 2, 5}

400

{ (-5,7) , (0,0) , (2, -8) , (5, -20) }

List the range.

{-20, -8, 0 , 7}

500

Draw a mapping with domain, {1, 5, 7, 9}

TBD

Random

100

Is this a function

YES

200

Find the y value when x=2.

y=1

300

Find the x value when y=8

x=3

400

True or false...These are linear functions.

false

500

Write a function such that the output is two more than four times the input.

y=4x+2