graphing proportional relationships
equations of proportional relationships
identifying proportional relationships
Solve
Review
100
what coordinate point is the origin?
0,0
100
Is this equation proportional? y= 3x
If so what is the constant of proportionality? (K)
Yes
k=3
100
Are these ratios proportional? 
5/(15)and6/(18)
Yes
100
How do you calculate the Constant of Proportionality?
y/x
100
Elijah is designing his garden. For every 3 pink tulips, he plans to plant 4 red roses. Using only these two types of flowers, he plans to plant 20 roses in his garden. How many tulips will Elijah use?
15
200
What are you finding out when you use the equation r=y/x?
Constant of Proportionality
200
List three uses for proportional relationships in real life.
Travel times
Recipes
Calculating cost
How amounts change over time
200
Is the graph a proportional relationship? Why?
NO
Does not go through the origin
200
Solve
n=3.8
200
Isabella is buying candy bars for 3 of her friends, costing her a total of $3.15. What is the constant of proportionality (aka: unit rate) in this situation?
$1.05
300
what are the 2 ways to tell if a graph is proportional
if the line is straight
goes through the origin
300
Daily Double
This is a difficult question...
The Anderson family was taking a road trip. They traveled 392 miles in 7 hours. Write an equation relating their miles traveled, y, and the number of hours, x.
y = 56x
300
Is the table proportional?
No
300
Given the table is proportional, find the constant of proportionality.
K = 13
300
Morgan pays $1.25 for a soda for each of her friends. If she is buying soda for 4 friends, how much will she spend?
What is $5
400
Is this graph proportional?
YES
400
Using this graph, What is the equation? 
y= 1/6x
400
Is the table proportional?
Yes it is proportional
400
John reads 6 pages in 12 minutes. How long does it take him to read a whole page?
2 minutes
400
Given a square with side length of 9.5 inches, what is the area in square centimeters, rounded to the nearest tenth? Use 1 inch = 2.54 centimeters.
582.3 centimeters
500
If a graph goes through the origin, and passes through (3, 15), what is the constant of proportionality?
k = 5
500
Write an equation for the table given the table is proportional.
y=3/(2)x
500
a) yes
500
8.75 hours
500
Carpet Max advertises that they can install 1,260 square feet of carpet in 2 1/4 hours. They charge $40 per hour for a special install of 3,360 square feet. How much will they charge?
$240