
Relations Functions
Presentation
•
Mathematics
•
9th Grade
•
Hard
Joseph Anderson
FREE Resource
7 Slides • 24 Questions
1
Relations, Functions, Domain, and Range
2
Let's Start with a Review...
3
Multiple Choice
What is the x and y intercept for the following equation ?
4x - 10y = 20
x - int = 4
y-int = -10
x-int = 5
y-int = 2
x - int = 5
y int = -2
x -int = 4
y -int = -10
4
Multiple Choice
5
Multiple Choice
6
Multiple Choice
(1, 3), (9,10), (0, -4), (8, 9), (4, 0)
7
Today's Goals
Identify the domain and range
Use the domain and range to find functions
Use the vertical line test to find functions
8
Poll
Choose One:
9
Open Ended
What do you think this machine has to do with algebra?
10
Multiple Choice
Let's say you want a Sprite... What must you enter into the machine?
A1
B3
B4
A3 or B3
11
Poll
What if you pressed A3 or B3 and got a water?
That's cool, I like water.
I'd keep putting money in and trying until I got my Sprite.
I'd stop using that machine
12
13
Multiple Choice
What's the correct mapping of this machine's domain and range?
14
Poll
What does this mapping mean in the context of this vending machine?
Pressing A1 gets me what I want.
I don't know what I'm going to get when I press A1.
This machine works perfectly.
15
Here's the deal...
We only call something a function when we know exactly what we're going to get (like when you press the x button).
Getting what you want should be a function of pressing the correct button.
16
Poll
Do you think this set of points represents a function?
{(6,−3), (4,1),(7,−2),(−3,1)}
Yes
No
17
18
Multiple Choice
Function
Not a Function
19
Multiple Choice
Is this mapping a function or not a function?
Function
Not a Function
20
Multiple Choice
R: {0, 1, 2, -4}
R:{1, -3, -4}
R:{1, -3, -4}
21
Multiple Choice
22
Multiple Choice
Is this table a function or not a function?
Function
Not a Function
23
Poll
In 10 minutes or less:
Open a new tab and Go to DeltaMath and complete the
Finding functions part 1
assignment.
You must get at least 4 correct.
Rate your performance.
: )
: |
: (
24
Wait, there's another way:
You can also tell if you have a function simply by looking at a graph.
Use the VERTICAL LINE TEST
If a vertical line touches more than one point on a graph at a time, then NO FUNCTION
25
Multiple Choice
Is this graph a function or not a function?
Function
Not a Function
26
Multiple Choice
Which graph does NOT pass the vertical line test?
Graph 1
Graph 2
Graph 3
Graph 4
27
Multiple Choice
Which graph is a function?
Graph 1
Graph 2
Graph 3
Graph 4
28
Multiple Choice
Is this graph a function or not a function?
Function
Not a Function
29
Poll
In 5 minutes or less:
Open a new tab, go to DeltaMath and complete the following assignment:
Finding Functions Part 2.
You must get 8 correct.
Rate your performance below:
: )
: |
: (
30
Open Ended
One question I still have about functions, domain, and range is...
31
Poll
In 10 minutes or less: Open a new tab, go to DeltaMath and complete the Functions Mixed Practice Assignment. Rate your performance.
: )
: |
: (
Relations, Functions, Domain, and Range
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