Graphs
Equations
Tables
Mr. Dain
100
What 3 things make a graph proportional?
1. Straight Line
2. Uses point (0 , 0)
3. Quadrant 1
100
The formula for a proportional equation is y = kx.
Which letter is the constant of proportionality (COP)?
K
100
True or False:
For a Table to be Proportional, it MUST have a (0 , 0).
True
100
What is Mr. Dain's favorite candy?
Reese's or Kit Kat
200
Does the following graph show a proportional relationship?
Yes, it uses (0 , 0), is a straight line, and is only in the first quadrant.
200
The equation for a proportional relationship is
y = 3.25x
What is the constant of proportionality?
3.25
200
This table is proportional. What is the COP?
COP = 13
200
True or False
If Mr. Dain brings a soda to school it is NEVER a zero sugar soda.
False
300
Does the following graph show a proportional relationship? If not, why?
No. It doesn't use the point (0 , 0).
300
Using this graph, what is the equation?
y=1/6x
300
Why is this not proportional? (Check for a COP)
It does not have a COP. If we do y divided by x for each part, they do not get the same number.
300
What size shoe does Mr. Dain wear?
13
400
Is this graph proportional?
Yes, because it uses (0 , 0), is a straight line, and is only in Quad 1.
400
Write an equation for the proportional relationship shown in the table.
y = 3/2 x
400
What is the COP?
9
400
What is Mr. Dain's Fiancé's name?
Kenlee
500
True or False
If a graph has a straight line, it is automatically showing a proportional relationship.
False. A straight line is not the only part of a proportional relationship on a graph.
500
The equation y = 3.09x represents the total cost per gallon of gas. How many gallons did Mr. Dain buy if he paid $27.81?
9 Gallons of Gas
500
Mr. Dain took 8 hours to drive 272 miles. How many miles does he drive in 1 hour?
34 mph
500
What is Mr. Dain's Middle Name?
Scott