Unit 5 B (Honors) Proportional Relationships & Percentage Rates

What is the constant rate of change (k) between the quantities in the table?

• 40 CALORIES PER MIN.

• 15 CALORIES PER MIN.

• 4 CALORIES PER MIN.

• 60 CALORIES PER MIN.

Find the rate of change

• 1

• 2

• 11

• ½

Jimmy was going on vacation. His parents drove the first day and went 390 miles in 6 hours. The next day they drove for 8 hours and went 520 miles. What was their constant rate of speed?

• y=65x
• y=60x
• y=40x
• y=25x

Tags

CCSS.HSF-LE.A.1B

What is the constant of proportionality (in miles per hour) based on the table?

• 45 miles per hour

• 90 miles per hour

• 135 miles per hour

• 2 hours per 90 miles

Find the unit rate:  $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

• $1.00 per pound
• $3.60 per pound
• $1.20 per pound
• $1.10 per pound

At what rate did the rain fall?

• 2 cm per hour

• ¹/₄ cm per hour

• ¹/₂ cm per hour

• 4 cm per hour

Tags

CCSS.8.EE.B.5

In the equation y = 14x, what is the constant of proportionality?

• y
• x
• 14

How can you find the constant of proportionality?

*HINT: Choose all that apply

• k = y/x

• k = x/y

• E=mc²

• y = kx

What is another term used for "constant proportionality"?

• constant rate of change

• unit rate

• slope

• All of the above

Craig earns extra money as a lifeguard. He earns $37 for 4 hours and $64.75 for 7 hours.  What is the constant of proportionality? 

• $37
• $64.75
• $9.25
• $18.50