Proportionality

There is a proportional relationship between the time (in days) Layla spends making porch swings, x, and the number of swings she builds, y.

What is the constant of proportionality? Remember: k=y/x

• k = 1/5

• k = 5

Tags

CCSS.7.RP.A.2B

What characteristic do you look for in the table in order to decide whether the relationship is proportional?

• The amount earned divided by the number of days is constant for each pair of values in the table.

• The amount of days that are worked go up to 5.

• The amount earned multiplied by the amount earned is constant for x and y.

Tags

CCSS.7.RP.A.2A

For the equation: k=y/x, the variable k is called the...

• Constant, and it represents the constant rate of change or constant ratio between x and y

• Coefficient, and it represents the constant rate of change or constant ratio between x and y

• x factor, and it represents the constant rate of change or constant ratio between x and y

• y factor, and it represents the constant rate of change or constant ratio between x and y

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 or non-proportional?

• Proportional
• Non-Proportional

Tags

CCSS.7.RP.A.2A

What is the constant of proportionality?

• $3
• $4
• $2
• $9

Tags

CCSS.7.RP.A.2B

Is this table proportional?

• Yes
• No

Tags

CCSS.7.RP.A.2A

What is the unit rate?

• 5 dollars/hour

• 10 dollars/hour

• 15 dollars/hour

• 20 dollars/hour

What calculation should you perform to find the unit rate?

• $10\ \div\ 5000$

• $10\ \times5000$

• $5000\ \div10$

• $5000\times10$

Tags

CCSS.6.RP.A.3B

What is happening in this graph from point A to B?

• The object is accelerating.
• The object is not moving.
• The object is decelerating.
• The object is moving at a constant speed.

Tags

CCSS.HSF.IF.B.4