Graphing proportional relationships
Equations of proportional relationships
Identifying proportional relationships
Solve/ Review
Misc.
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
Solve
n=3.8
200
Coordinates given is (5,60) What is the constant (simplify!!)?
1/12
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
or
S=10/147s
400
Does the table show a proportional relationship? How do you know?
No, 8/4= 2 not 32
400
The ratio of students to parents at a basketball game is 6 to 5. Is that proportional to 170 parents and 204 students?
Yes
400
Is the table proportional?
No
500
What is the constant of proportionality?
1/2
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
Which example does NOT show a proportional relationship?
A: The value of y is 3 times as large as the value of x.
B: John charges $25 for every 1/2 acre mowed.
C: Samantha makes $10 an hour at her job
D: Rental costs are $15 for the first hour and $10 for each additional hour.
D: Rental costs are $15 for the first hour and $10 for each additional hour.
500
8.75 hours