PowerPoint created by
Parsheena Berch
Resource: JBHM material
Pictures: Google Images
Input / Output tables
Test Thursday
Hayden is thinking of a mystery number. His number is less than 5 and greater than -13. His number is located 4 spaces away
from 2 on the number line. What is his mystery number?
a) -6
b) -2
c) 6
d) This is not possible
The Sneetches
• What was the machine doing to the animals?
• The sneetch goes in as one thing and comes
out as something different because of
something that happened in that machine.
• Write a statement explaining what happened
to give the sneetches stars. Do this using
mathematical terms. Or signs (+,-,=)
Sneetch + a star made a star bellied sneetch
Star bellied sneetch – star= plain bellied sneetch
In this lesson, a special math machine will be
used. A number will go in and come out a
different number.
Sneetches
Input 0, 1, 2, 3
+2
What will happen to any number that
goes into this machine?
x5
Using the last machine, complete the
table.
Input
1
2
3
4
Output
This process is a function and the table
is a function table.
• X is used to represent the input number
• Y is used to represent the output number
• So, in the last table the equation X x 5 =y
could be used to show what is happening in
the function machine or function table.
What would be the equation for this
input / output machine?
+2
Use this machine for the next problem.
x
-3
y
Fill in the question marks!
Input x
4
6
?
?
12
?
Output y
?
?
5
7
?
11
Page 86
Rule:
X
y
2
14
3
15
4
16
5
17
6
18
10
22
Rule:
X
y
2
1
4
2
6
3
8
4
10
5
100
50
X+6=y
x
y