Ratios and Proportional Relationships

Find the constant rate of change for this graph.

• 2 lb per person

• 1 lb per person

• 3 lb per person

• 4 lb per person

Determine the Constant Rate of Change?

• $250.00 per day

• $333.33 per day

• -$250.00 per day

• -$333.33 per day

What is the ratio of red apples to green apples

• 7 apples to 3 green

• 4 red apples to 7 apples

• 4 red apples to 3 green apples

• 3 green apples to 4 red apples

What is a Ratio?

• Is a comparison of two quantities 

• A rate with a denominator of one

• It is when the only factor the numerator and denominator share is a one 

• Two decimals that can be multiplied

Sargento cheese slices $2.48 for 10 slices
or
Velveeta Cheese slices $3.18 for 12 slices
Find the unit price for each and choose the better deal.

• Sargento

• Velveeta

What is the unit rate in this proportional relationship?

• 60 miles/1 hour

• 120 miles/ 2 hours

• 1 mile/ 1 hour

Is this table proportional?

• Yes

• No

Simplify the ratio of
35 : 14

• 5 : 2

• 2 : 5

• 3 : 1

• 35: 14

In a certain apartment building, the ratio of tenants to cars is 3:5. If there are 30 tenants, how many cars are there?

• 35

• 60

• 18

• 50

Which is NOT equivalent to 3:5?

• 15:25

• 9:15

• 21:28

• 30:50