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Functions

Functions

Presentation

•

Mathematics

•

7th - 8th Grade

•

Medium

•

CCSS

8.F.A.1

Standards-aligned

Created by

Curtis Armantrout

Used 1K+ times

FREE Resource

7 Slides • 11 Questions

1

Functions

Today's Objective: I can determine if a relation is a function

2

Functions

When the x that you try gives you only one y THAT'S A FUNCTION
A function is a special relation where each x-value only has one y-value

3

When you put an input into a machine you can only get out one input.

THAT'S A FUNCTION!

(Each input has only one output)

4

5

These are all functions

EACH X VALUE

HAS ONLY ONE Y VALUE

6

These are NOT functions

In each example

there is an X VALUE that has more than one Y VALUE

7

Multiple Choice

Question image

Is the relation a function? Why.

1

Yes, because the x-value 11 has two y-values paired with it.

2

Yes, because each x-value has only one y-value paired with it.

3

No, because the x-value 11 has two y-values paired with it.

4

No, because each x-value has only one y-value paired with it.

8

Multiple Choice

Question image

Is this table a function or not a function?

1

Function

2

Not a Function

9

Multiple Choice

Question image

Is this mapping a function or not a function?

1

Function

2

Not a Function

10

Multiple Choice

Question image

Is this set of ordered pairs a function or not a function?

1

Function

2

Not a Function

11

Multiple Choice

Question image

Is this set of ordered pairs a function or not a function?

1

Function

2

Not a Function

12

The vertical line test

To tell if a graph is a function, draw a vertical line anywhere on the graph.
If any vertical line touches the graph in more than one location it is NOT a function

13

Multiple Choice

Question image

Which graph does NOT pass the vertical line test?

1

Graph 1

2

Graph 2

3

Graph 3

4

Graph 4

14

Multiple Choice

Question image

Is this graph a function or not a function?

1

Function

2

Not a Function

15

Multiple Choice

Question image

Is this graph a function or not a function?

1

Function

2

Not a Function

16

Multiple Choice

Question image

Is this graph a function or not a function?

1

Function

2

Not a Function

17

Multiple Choice

Question image

Is this graph a function or not a function?

1

Function

2

Not a Function

18

Multiple Choice

Question image

Is this graph a function or not a function?

1

Function

2

Not a Function

pattern-tertiary

Functions

Today's Objective: I can determine if a relation is a function

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