Ratios Rate Unit Rate Proportion

There are 4 birds and 6 snakes. What is the ratio of birds to total animals?

• 4/10

• 4/6

• 6/4

• 10/4

$15 for 5 pairs of socks; $25 for 10 pairs of socks. Are the ratios equivalent?

• yes, equivalent

• no, not equivalent

Tony memorized 18 vocab words in 2 hours. Billy memorized 27 vocab words in 3 hours. Are these equivalent ratios?

• Yes, they are equivalent.

• No, they are not equivalent.

A store sees 120 customers in 8 hours. What is the unit rate (in customers per hour)?

• 16 customers per hour

• 15 customers per hour

• 12 customers per hour

• 20 customers per hour

A proportional relationship can be written as an equation in the form ____ = _____  _____

• y = k+x

• y = k-x

• y = kx

• y = k/x

The constant of proportionality in the equation y = ½x is _______. 

• x

• y

• 1/2

• 2

Determine the constant of proportionality.

• 5

• 0.2

• 1

• 1.4

Write an equation for this relationship.

• y=18x

• y=18.50x

• y=22.50x

• y=22x

A comparison of two quantities using the word to, for every/each, or a colon :.

• Ratio

• Rate

• Quantity

• Scale Factor

When a rate is expressed as a unit of one...

• Unit Rate

• Scale Factor

• Proportion

• Decimal