Proportional Relationships

Does this graph represent a proportional relationship?

• Yes
• No

Does this graph represent a proportional relationship?

• Yes
• No

A machine packs boxes at a constant rate of 2/3 a box every 1/2 a minute.  What is the number of boxes it packs per minute?

• 1/3
• 3/4
• 7/6
• 4/3

Does this table represent a proportional relationship?

• Yes
• No

Does this equation represent a proportional relationship?

• Yes
• No

Does this equation represent a proportional relationship?

• Yes
• No

What does k represent in the equation y = kx?

• constant for preparation
• constant of proportionality
• kangaroos
• krispy kreme

How do you find k? 

• x/y
• y/x
• y=kx
• x ⋅ y

Identify the constant of proportionality. Write an equation to relate weight, w, to the price, p.

• k = .45; p = .45w
• k = .22; p = .22w
• k = 45; p = 45w
• k = 22; p = 22w

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