Constant of Proportionality, Unit Rates, and Constant Rates

Tim ran 10 miles in 2 hours. What is the unit rate?

• .2 miles per hour
• 5 miles per hour
• 20 miles per hour

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

• 45
• 90
• 135

Janet used 155 beads to create 5 necklaces.  What is the constant of proportionality?  (How many beads did she use to make each necklace?)

• 31
• 51
• 33

Is the given table a proportional relationship? If so, what is the constant?

• Yes; 1/3
• Yes; 3
• No

What makes a graph proportional?

• Straight line through the origin
• curvy line that goes through the origin
• Curvy line

What is the constant of proportionality? (Hint make a table of x,y values and find the C.O.P. (unit rate)!)

• 5

• 1/5

• 6

Does this graph show a proportional relationship?

• yes
• no
• you cannot tell

It costs $3.60 for 3 pounds of apples. How much does it cost for 1 pound of apples?

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

Is this table proportional or non-proportional?

• Proportional
• Non-Proportional

Which graph is proportional?

• A
• B
• C and D
• All of the graphs are proportional