Slope and Unit Rate

If y and x are in a linear proportional relationship, and the change in y is 21 when the change in x is 7, which equation represents this relationship?

• y = 3x

• y = 1/3x

• y= 7x + 21

• y = 21x +7

What is the type of slope?

• negative

• steep

• undefined

• zero slope

What is the rate of change for the following graph?

• 80 mi/hr

• 20 mi/hr

• 40 mi/hr

• 160 mi/hr

Identify the rate of change.

• k = 6 cookies/package

• k = 12 cookies/package

• k = 1/6 package/cookie

• k = 1/12 package/cookie

• none (not proportional)

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound

• $5 per pound

• $35 per pound

• 0.125 pounds per dollar

Which statement about this graph IS NOT true?

• The graph compares the ratio of the charged amount to the number of hours.

• At 4 hours, the charged amount is $16.

• The graph creates a straight line that increases every hour.

• At 2 hours, the charged amount is greater than $5.50.

Find the unit rate: $3.60 for 3 pounds of apples.

• $1.00 per pound

• $3.60 per pound

• $1.20 per pound

• $1.10 per pound

What is the unit rate for the rain fall?

• 2 cm per hour

• 1 cm per hour

• ¹/₂ cm per hour

• 4 cm per hour

Mrs. Soto can decorate 5 cupcakes in 2 minutes.

Which graph has a slope that best represents the

number of cupcakes per minute Mrs. Soto can

decorate?

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A scuba diver is descending at a rate of 15 ft per

minute. Which graph has a slope that best

represents this rate?

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