Exploring Constant Rate of Change and Proportionality

What type of relationship is a proportional relationship?

• Additive

• Exponential

• Subtractive

• Multiplicative

What does a graph of a proportional relationship look like?

• A vertical line

• A horizontal line

• A straight line through the origin

• A curved line

What is the origin in a graph?

• The point (0,0)

• The point (1,1)

• The point (1,0)

• The point (0,1)

If you buy 3 shirts and each shirt costs $5, how much do you pay?

• $10

• $25

• $15

• $20

What is a proportion?

• A single fraction

• Two equivalent ratios

• A single ratio

• Two different fractions

What does the rate of change compare?

• Two different equations

• Two different variables

• Two different graphs

• Two different values

What is the constant of proportionality represented by in 7th grade?

• c

• b

• k

• m

How do you calculate the constant of proportionality (k)?

• x divided by y

• y divided by x

• y multiplied by x

• x multiplied by y

If 1 pound of hamburger meat costs $4, how much would 5 pounds cost?

• $10

• $15

• $25

• $20

What does a proportional graph always pass through?

• The point (1,1)

• The point (0,0)

• The point (0,1)

• The point (1,0)