Proportional Representations

Write the equation for the table given

• y = 1/3x

• y = 3x

• y = 1/2x

to find constant of proportionality you use?

• k=x/y

• k=y/x

• k=yx

• k=ab

What is equation for proportional relationship?

• k=yx

• y=kx

• x=yk

• y=ab

A recipe calls for 3 cups of flour for every 4 cups of sugar. If you want to use 6 cups of sugar, how many cups of flour do you need?

• 4.5

• 5

• 4

• 4.5

What is the constant of proportionality (in miles per hour) based on the table?

• 45

• 90

• 135

• 2

• 8

• 12

• 16

• 20

A map scale shows that 1 inch represents 10 miles. If two cities are 3 inches apart on the map, how far are they actually from each other?

• 30 miles

• 40 miles

• 20 miles

• 50 miles

A recipe calls for 3 cups of flour for every 4 cups of sugar. If you want to make a half batch, how many cups of sugar do you need?

• 2 cups

• 3 cups

• 4 cups

• 6 cups

A survey in a school found that 60 students own a bicycle. If this represents 30% of all students, how many students are in the school?

• 180

• 200

• 220

• 240

Does this graph represent a proportional relationship?

• Yes, because the line is pretty.

• No, because the line goes through the origin.

• Yes because the line goes through the origin.

• No, because the graph is non-proportional.