Proportionality and Dilations

If, in a dilation the figure became larger, which of these rules can best represent that transformation?

Tags

CCSS.8.G.A.3

Match the following

• A (1,1) B (2,2) C (3,3)

  A' (5,5) B' (10,10) C' (15,15)

• Scale factor of 1/2

• A (3,3) B (6,6) C (9,9)

  A' (1,1) B' (2,2) C' (3,3)

• Scale factor of 1/3

• A (2,2) B (3,3) C (4,4)

  A' (4,4) B' (6,6) C' (8,8)

• Scale factor of 5

• A (2,2) B (3,3) C (4,4)

  A' (1,1) B' (1.5,1.5) C' (2,2)

• Scale factor of 2

• A (2,2) B (3,3) C (4,4)

  A' (6,6) B' (9,9) C' (12,12)

• Scale factor of 3

Tags

CCSS.7.G.A.1

How can you calculate the constant of proportionality or unit rate, from a proportional graph or table?

Tags

CCSS.7.RP.A.2B

If you already have the constant of proportionality, or the unit rate (k); how can you write the equation?

Tags

CCSS.7.RP.A.2C

Find the constant of proportionality or the unit rate.

• 5 cents per pencil

• 20 cents per pencil

• 30 cents per pencil

Tags

CCSS.7.RP.A.2B

What is true about this graph?

• This graph does not contain the origin, therefore it is non-proportional

• This graph pass through the origin, therefore it is proportional

Tags

CCSS.7.RP.A.2D

What is the unit rate/constant of proportionality?

• 80 miles in 1 hours

• 20 miles in 1 hours

• 40 miles in 1 hours

• 160 miles in 1 hours

Tags

CCSS.7.RP.A.2D

What best describes the data on this graph?

• This graph is not proportional.

• This graph is proportional.

Tags

CCSS.8.EE.B.5

Which one states a proportional relationship?

• $6 per car wash.

• $6 per car wash, if you take a membership that costs $5

Tags

CCSS.7.RP.A.2A