Proportions
Tables
Graphs
Equations
Vocab
100
1/2=3/?
6
100
Find k
1 1/3
100
A graph is proportional if...
It is straight and it goes through the origin
100
What is the general form of an equation?
y=kx
100
The point (0,0)
Origin
200
2/5=?/75
30
200
Find k
1/2
200
Find the constant of proportionality
2
200
What is the unit rate in the equation
y=1/4x
1/4
200
A constant rate throughout a table
Constant of proportionality
300
3/7=13.5/?
31.5
300
Find k
5/3
300
Why is this graph not proportional?
It does not start at the origin
300
What is the equation for this table?
y=60x
300
A scenerio where all rates are equal
Proportion
400
2 1/4:5 = ??:35
15 3/4
400
Find the unit rate
16 1/2
400
What is the meaning of the point (5,100)?
5 gallons of gas for 100 miles driven
400
Using the right variables, what is the equation for this table?
w=16.5m
400
The variable of the constant of proportionality is
k
500
5/(7 1/2) = ?/60
40
500
Is this table proportional?
No
500
What is the equation for this graph?
y=5x
500
What is the equation for this graph?
y=7/3x
500
A straight line is called?
Linear