graph direct proportion.notebook
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Bell Ringer: Suppose y varies directly as x. If y = 15 when x = 6. Find the constant of proportionality. Write the direct variation equation.
Target: represent direct proportion graphically Last Night's Homework: worksheet 5.1
Aug 25­10:27 AM
Homework Review:
Sep 20­7:24 PM
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graph direct proportion.notebook
January 13, 2017
Who does this look like?
Wrong. It's Mike!
Jan 31­9:06 PM
and Mike rides a unicycle...
revolutions 1
2
3
distance
What does (0,0) mean?
What does (1,2) mean?
What's the unit rate?
What's the constant of proportionality? Coinkydink?
What's the direct variation equation relating distance to revolutions?
Jan 31­8:45 PM
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graph direct proportion.notebook
January 13, 2017
Jan 31­8:45 PM
Guided Practice
Feb 15­7:03 PM
3
graph direct proportion.notebook
January 13, 2017
a) Find the constant of proportionality? How much does
Jonathan earn per hour?
b) Write the direct proportion equation.
c) Explain what the point (2, 30) represents in this situation.
d) If Jonathan works 4 hours, how much will he earn?
e) If Jonathan wants to earn $45, how long should he work?
Feb 15­9:24 PM
p. 263 Guided Practice
Feb 15­9:30 PM
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graph direct proportion.notebook
January 13, 2017
Let's Try ­ p. 264 # 1 ­ 4, 7
Jan 31­9:20 PM
Wrap Up: The graph of a certain relationship passes through (0,0), (2,12), (5,30), and (9,54). Is this a direct proportion? If so, write the equation.
Homework: worksheet 5.2 Sep 20­7:29 PM
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graph direct proportion.notebook
January 13, 2017
Jan 13­10:19 AM
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