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Bell Ringer April 07, 2014School Day 146
Clear Target – Students will be able to identify proportional and inversely proportional relationships
represented by graphs, equations, and tables.
Daily Decimal1. What is the school day to
the 2nd Semester as a Decimal not rounded.
2. Identify if Graph A is directly or inversely
proportional:
Homework:Directly/Inversely
WS
Let’s watch this video
Extreme Makeover - Home Edition
Trailer
Inversely Proportional Relationship
Inversely Proportional Graph
1. Its curved.
2. It never touches the origin or
either axis.
3. You can’t complete a house if
you have lots of time but 0
workers.
4. You can’t complete the house
with lots of workers but 0
hours worked.
DiscussHow many hours do you think it
will take to build a house? If you have a small number of workers, will it take more time
to build a house? If you have a small amount of
time, will building a house require a large amount of
workers?
DiscussIn this example, the number of workers and the time are
inversely proportional, because when the quantity
of people decreases, the total time increases and
when the quantity of people increases, the total time
decreases.
Composition Notebook
Let’s continue our notes on Directly/Inversely
Proportional Relationships
Staple the next two pages into your
composition notebook.
Whiteboard PracticeRemember this is practice
is done in silence. Raise your board in front of you and I will let you know if you are correct by a yes
or a no. If you are incorrect, please
redo.
Equations: Identify if Directly, Inversely, or Neither?
1.y = ½ x
Directly
2. y = 2/x
Inversely
3. y = x/2
Inversely
4. 5 = xy
Inversely
5. 3y = 2x
Directly
6. x = 7y Inversely
7. y = -2x
Neither
8. y=8x-1
Neither
9. y = 5x
Directly
Graphs: Identify if Directly, Inversely, or Neither?
Neither Directly Inversely
Tables: Identify if Directly or Inversely?
Inversely Inversely Directly
What did we learn today?
I will be able to identify
directly/inversely proportional relationships
represented by graphs, equations, and
tables.
Exit SlipWrite about it!
On your dry erase boardExplain the difference
between a direct proportional and an inverse proportional relationship?I will check your dry erase board before leaving class.