Proportionality
Graphs
Unit Rates
Ratios
General
100
In what row or column is x in?
The first
100
How can you tell if a graph is proportional?
The graph is a straight line that passes through the origin
100
What do you do with the fraction on the bottom to create one?
Flip it and multiply
100
Is this an equivalent ratio?
1:5 and 3:15
100
How can you tell if an equation is proportional?
The constant of proportionality all equal the same thing
200
In what row or column is y in?
The second
200
If the graph proportional if it starts at (0,3)?
No
200
What you do to the bottom, you also have to do to what?
The top
200
If 3 pairs of shoes cost $60, how much does 1 pair cost?
$20
200
If I get 0.8 as all my results, is it proportional?
Yes
300
What is the correct formula for finding the constant of proportionality?
y/x
300
Where should a proportional graph start?
(0,0)
300
Jason runs 2/3 mile in 20 minutes. Assuming he runs at a constant pace, what is his speed in mph?
8 mph
300
If there are 10 girls and 12 boys in a class, what is the ratio of boys to total number of students?
12:22
300
If I get 0.8, 0.9 and 0.10 as my results. Is this proportional?
No
400
What is the constant of proportionality
what you get when you do y/x, or "k"
400
Which of these lines is proportional on the graph?
Dark Green
400
A smoothie recipe includes strawberries, bananas and yogurt. There are 160 calories in a 1/5 cup serving of the smoothie. How many calories are in 2 cups of the smoothie?
1600 calories
400
In the school cafeteria, the ratio of sandwiches to slices of pizza sold is 5 to 8.
If the cafeteria sold 40 sandwiches, how many slices of pizza did they sell?
64 slices
400
What is k in this equation? y=12.5x
k=12.5
500
What does k represent in y=kx
constant of proportionality
500
Create a graph that is proportional.
The graph should have a straight line that goes through the point (0,0)
500
Three amusement park tickets cost $52.50. Four sports game tickets cost $76.00. Does the amusement park or the sports game tickets cost less, per game? By how much?
Amusement Park, $1.50
500
Complete the ratio
5/4 to 130/?
26
500
What variable is x and what variable is y?
x- independent
y- indenendent