Graph and Constant of Proportionality

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

Determine the constant of proportionality.

• 5

• 0.2

• 1

• 1.4

Write an equation for this relationship.

• y=18x

• y=18.50x

• y=22.50x

• y=22x

What is the constant of proportionality for this table?

• $1/9 per hour

• $9 per hour

• $8 per hour

Is this table proportional or non-proportional?

• Yes

• No

What is the direct variation?

• y=9/3x

• y=6x

• y=9x

• y=3x

Identify the constant of proportionality.

• k = 2

• k = 3

• k = 1.50

• k = 2/3

• none (not proportional)

Identify the constant of proportionality.

• k = 1/0.45

• k = 0.45

• k = -0.45

• k = -1/0.45

• none (not proportional)

Which of the following statements is TRUE about the graph? Choose all that apply.

• The point (2, 8) shows that 8 pounds of cheese cost$2.00.

• The point (1.5, 6) shows the cost is $6.00 for 1.5pounds of cheese.

• The point (0.75, 3) shows that 0.75 pound of cheesecosts $3.00.

• The point (0.25, 1) shows the cost is $0.25 for 1pound of cheese.

• The point (0, 0) shows the cost is $0.00 for 0 pounds of cheese

Which of the tables above represents a proportional relationship?

• a & c

• a, b & c

• a, c & d

• all of them