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.