1. Estimate the side length of a square that has a 9 cm long diagonal.
About 5.5cm
About 6.3cm
About 9cm
About 9.5cm
2. Select ALL quantities that are proportional to the diagonal length of a square.
a) Area of a square
b) Perimeter of a square.
c) Side length of a square
3. Diego made a graph of two quantities that he measured and said, "The points all lie on a line except one, which is a little bit above the line. This means that the quantities can't be proportional." Do you agree with Diego?
Yes, I agree with Diego. In order for a relationship to be proportional, every single point must be on the line. No exceptions.
No, I don't agree with Diego. As long as the graph goes through (0, 0) and most of the points are on the line, it is proportional.
4. The graph shows that while it was being filled, the amount of water in gallons in a swimming pool was approximately proportional to the time that has passed in minutes.
a) About how much water was in the pool after 25 minutes?
About 250 gallons
About 300 gallons
About 400 gallons
About 500 gallons
4b. Approximately when were there 500 gallons of water in the pool?
About 37-41 minutes
About 32-36 minutes
About 42-46 minutes
About 27-31 minutes
4c. Estimate the constant of proportionality for the number of gallons of water per minute going into the pool.
About 10
About 15
About 20
About 25
Exit Ticket
1. The first graph shows the height of a plant after a certain amount of time measured in days.
Do you think that there may be a proportional relationship between the number of days and the height of the plant?
Yes, this may be a proportional relationship. It looks like most of the points are on the line and it could go through (0, 0).
No, this is not a proportional relationship. Some of the points are not on the line.
Exit Ticket
2. The second graph shows how much snow fell after a certain amount of time measured in hours.
Do you think that there may be a proportional relationship between the number of hours and the amount of snow that fell?
Yes, there may be a proportional relationship. It looks like most of the points are on the line and it could go through (0, 0).
No, this is not a proportional relationship. Some of the points are not on the line.
