Unit 3 Proportionality and Ratios

What is a Ratio?

• comparison of two quantities 

• multiply two fractions 

• number over another number

• Two decimals that can be multiplied

Is this table proportional?

• Yes

• No

What does the point (2, 94) represent in this situation?

• Every week, they earn $94.

• After 94 weeks, they save $2.

• After 1 week, they save $47.

• After 2 weeks, they save $94.

Does the graph show a proportional relationship?

• Yes

• No

What is the unit rate for this graph?

• 100

• 25

• 50

• 200

Does this table represent a proportional relationship?

• Yes

• No

Jeff ran 6 miles in 4 hours. At this rate, how many miles will he run in 6 hours?

• 9 miles

• 4 miles

• 6 miles

• 36 miles

Perry earned $96 shoveling snow from 8 driveways.  At that rate, how much would he have made if he had shoveled only 6 driveways?

• $120

• $12

• $84

• $72

Is this table proportional?

• yes

• no

• I'm not sure, I need extra help!

Mr. Wright has 7 boys and 9 girls. What is the ratio of girls to boys?

• 7 to 9

• 9 to 7

Tags

TEKS.MATH.7.4D