Rate of Change and Proportional Relationships

What is the rate of change for this table?

• $1/9 per hour

• $9 per hour

• $8 per hour

What is the rate of change for the table? Be careful...remember the "x" is the top row of numbers and the "y" is the bottom row.

• 1/25

• 25

• 50

• 2

Identify the rate of change. Use a calculator if you need to.

• 2 dollars per pound

• 3 dollars per pound

• $1.50 per pound

• 67 cents per poound

• none (not proportional)

What is the rate of change of the relationship represented by the table above?

• 75 dollars per adult

• 0.013 dollars per adult

• 1/75 dollars per adult

• None of the above

Does the table show a proportional relationship? If so, what is the equation?

• Yes, y = 6x

• No, this is not proportional

• Yes, y = 12x

What characteristic do you look for in the table in order to decide whether the relationship is proportional?

• The amount earned divided by the number of days is constant for each pair of values in the table.

• The amount of days that are worked go up to 5.

• The amount earned multiplied by the number of days is constant for each pair of values in the table.

Write an equation using the rate of change.

• y = 5x

• y = 4x

• y = 8x

The table shows a proportional relationship. Select the equation to match the table.

• y = 1x

• y = 18x

• y = 6x

• y = y

• 2

• 3

Find the rate of change if there are 624 calories in 3 servings.

• 1,872 calories per serving

• 208 calories per serving

• 624 calories per serving

• 621 calories per serving