Percents and Proportionality Review

What is K the constant of Proportionality?

Hint from your STAAR chart

K= y/x

• 9.3

• 9.5

• 8

• 8.3

Tags

CCSS.7.RP.A.2B

A box of cereal weighs 14 ounces and costs $2.66. What is the price per ounce of the cereal? Hint Unit rate DIVIDE!

• $0.14

• $0.19

• $0.21

• $0.24

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Last year a Whopper cost $2.40. This year the price is $2.70. Find the percent of change.

• 14.5% increase

• 12.5% increase

• 12.5% decrease

• 14.5% decrease

Tags

CCSS.6.RP.A.3C

This year, there are 900 7th graders. Last year there were 810. Find the % of change.

• 11%

• 10%

• 90%

• 0.11%

Tags

CCSS.6.RP.A.3C

What is the constant of proportionality?

• $3
• $4
• $2
• $9

Tags

CCSS.7.RP.A.2B

Which best describes the graph represented in this table?

•  proportional
• non-proportional

Tags

CCSS.7.RP.A.2A

Is this table proportional?

• Yes
• No

Tags

CCSS.7.RP.A.2A

Which graph is proportional?

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

Tags

CCSS.7.RP.A.2D

Write the equation for this table.
K=9

• y=9
• y=9x
• y=1/9

Tags

CCSS.5.OA.B.3

Write the equation for the table given

• y = 1/3x
• y = 3x
• y = 1/2x

Tags

CCSS.5.OA.B.3