 Practice - Proportional Relationships Terms of Use    Contact Person: Donna Roberts  1.
Does the table shown at the right demonstrate a proportional relationship?
Explain.
 a 2 4 6 8 b 14 28 42 56

Choose:
 Yes No

2.
The perimeter of a regular pentagon can be represented by the equation P = 5s, where P is the perimeter and s is the length of a side.
Does this equation represent a proportional relationship?
Explain. In a regular pentagon,
all of the sides are
of the same length.
Choose:
 Yes No

3.
Does the table shown at the right demonstrate a proportional relationship?
Explain. Choose:
 Yes No

 4. Examine the graph at the right. a) Explain why this graph displays a proportional relationship? b) If r = unit rate, explain the meaning of (1, r). c) What is the constant of proportionality?

 5. Two model helicopters take off at the same time. Helicopter A rises 5 meters every 2 seconds. Helicopter B rises 4 meters every 3 seconds. a) Fill in the missing ordered pairs on the coordinate graph at the right for each helicopter. b) Does the rise of each helicopter represent a proportional relationship? Explain. c) Using ratios, explain why helicopter A is rising faster than helicopter B. d) State the constant of proportionality associated with the rise of each helicopter.

6.
Carley ordered 10 bottles of WaZo Colored Hair Spray for \$50.60. Which of the following equations represents the proportional relationship between y, the total cost of the hair spray and x, the number of bottles ordered? Choose:
 50.60 x = y 5.06 x = y  7.
A line passing through unknown point A and plotted point B represents a proportional relationship.

If point B lies at (8,6), which of the ordered pairs shown below, could represent the coordinates of point A?

Choose:
 (4, 2) (3, 4) (0, 2) (6, 4.5) 8.
The number of chaperons on a field trip is proportional to the number of students, as shown in the table at the right. Which of the following choices represents the values for A, B and C, in that order?
Choose:
 8, 6, 32 8, 10, 24 6, 8, 24 6, 8, 32

9.
The graph at the right shows the relationship between x-values and y-values in a given situation. Which of the following choices is the constant of proportionality for this graph?
Choose:     10.
Which of the following choices represents the constant of proportionality associated with walkers A and B, in that order?
(Dots indicate locations of grid intersections.) Choose:     