Graphing proportional relationships
Equations of proportional relationships
Identifying proportional relationships
Solve/ Review
Vocabulary
100
what is the ordered pair of the origin?
(0,0)
100
Is this equation proportional? y= 3x
Yes
100
Are these ratios proportional?
5/11 and 6/12
No
100
What is the reciprocal of 2/8?
8/2
100
What is the constant of proportionality?
The number you multiply by each time.
The k in y=kx
200
Does the graph represent a proportional relationship? How do you know?
No, it doesn't go through the origin
200
Is this equation proportional?
y= 4x + 10
Not proportional
200
Is the graph a proportional relationship? Why?
NO
Does not go through the origin
200
What is 52
25
200
A ratio that compares the quantity of 1 unit to another quantity.
Unit Rate
300
Using this graph, What is the constant of proportionality? 
1/6
300
Keisha makes 9 dollars for each hour of work. Write an equation to represent her total pay (P) after working (H)hours.
P=9H
300
Kevin is running a marathon. When he finished the race, he discovered that each mile he ran at a constant rate. Is his mile time proportional?
Yes
300
If the scale copy got smaller than the original shape, the scale factor must have been: less than? Greater than? or Equal to 1?
Less than 1
300
What is the equation for any Proportional Relationship?
y=kx
400
Is the graph proportional? How do you know? If so, what is the COP?
Yes, straight line & through origin, COP=15
400
Darren bought 3 shirts for $44.10. Each shirt cost the same amount. Write the equation for the proportional relationship between cost (C) and # of shirts (S)
C= 14.70s
400
Does the table show a proportional relationship? How do you know?
No, 8/4= 2 not 32
400
How are AREA units labeled?
They are squared x2
400
What is Perimeter?
The distance around an object. Adding up all the side lengths.
500
A rock climber ascends 3 meters every minute. Create a graph that shows the relationship between x (time in minutes) and y (distance). How many meters high will she be after 5 minutes?
15 meters high
500
Is the table proportional? If so, what equation could be written to show the relationship between cost (Y) and # of tickets (T)
Proportional
Y=1.50T
500
Is the table proportional? How do you know?
If so, what belongs in the blank y=___x
Yes, we multiply by the same number each time
y=1.5x
500
If something is a scale copy that mean it is the... 4 words
Same Shape, Different Size
500
What is the difference between an equation and an expression?
An equation has an equal sign