Proportional Relation

These figures are similar.  Solve for x.

• 3

• 5

• 4

• 2

Which line shows a proportional relationship between x and y?

• Line L

• Line M

Is this table proportional?

• yes

• no

• I'm not sure, I need extra help!

Scale is 1cm = 8km. Hatboro and Smithville are 24cm apart on the map, what is the actual distance between the 2 cities?

• 87 km

• 216 km 

• 33 km

• 192 km

What is the constant of proportionality?

• 15

• 5

• 75

• 25

Which equation matches the graph?

• y = 8x

• y = 1x

• y = 3x

• y = 16x

A machine packs boxes at a constant rate of 2/3 a box every 1/2 a minute.  What is the number of boxes it packs per minute?

• 1/3

• 3/4

• 7/6

• 4/3

Does this equation represent a proportional relationship?

• Yes

• No

What is the scale factor?

• 3

• 18/6

• 1/3

What is a Ratio?

• comparison of two quantities 

• multiply two fractions 

• number over another number

• Two decimals that can be multiplied