Materials
Reminders
Find the rate of change in shrimp
caught between 2012 and 2020 ?
Shrimp Caught
5000 tons
350 tons
Year
2012
2020
Get out your agenda if you see
your name below. I would like
to have you in my FLEX
Wednesday.
Period 2
Period 7
4-4 Constant Rate of
Change
How do I use constant rates of
change to identify proportional,
nonproportional and linear
relationships?
Important
Vocabulary
Linear relationship– relationships that form
straight lines on graphs
Constant rate of change – the rate of change
described by a linear relationship
Activity
In groups of 2, determine whether or not the following data are
proportional.
Number of Hotdogs
2
4
6
8
Minutes
1
2
3
4
Number of Hotdogs
3
5
7
9
Minutes
1
2
3
4
Activity
In groups of 2, use a sheet of graph paper to graph the following tables
Number of Hotdogs
2
4
6
8
Minutes
1
2
3
4
Number of Hotdogs
3
5
7
9
Minutes
1
2
3
4
Activity
In groups of 2, use a sheet of graph paper to graph the following tables
Number of Hotdogs
2
4
6
8
Number of Hotdogs
3
5
7
9
Minutes
1
2
3
4
Minutes
1
2
3
4
Activity
Label each graph either proportional or nonproportional.
Label each graph either linear or non-linear
Questions:
How do I
determine if a
relationship is a
proportional
linear
relationship?
Notes:
It must meet 2 criteria.
1. The graph of the relationship must be a straight line
(linear)
2. The graph MUST GO THROUGH THE ORIGIN (0,0)
Questions:
How do I
determine if a
relationship is a
nonproportional
linear
relationship?
Notes:
It must meet 2 criteria.
1. The graph of the relationship must be a straight line
(linear)
2. The graph DOES NOT GO THROUGH THE ORIGIN
(0,0)
Questions:
What are some
helpful hints?
Notes:
ALL PROPORTIONAL RELATIONSHIPS ARE LINEAR
ALL LINEAR RELATIONSHIPS THAT GO THROUGH THE
ORIGIN ARE PROPORTIONAL
LINEAR RELATIONSHIPS THAT DO NOT GO THROUGH
THE ORIGIN ARE NEVER PROPORTIONAL
Homework
Page 207-209; 7-22 and
28-29
AND Cornell Notes
Summary