Proportions and Scientific Notation

The population of a city is 1,234,567. How is this number written in scientific notation?

In her report on Alaska, Kaja noted that the State of Alaska has an area of 663,300 square miles. How is this number written in scientific notation?

How do you know if a graph is proportional?

• The line will pass through the origin and be curved.

• The line must be straight and pass through the origin.

• The line must pass through any point on the "y- line"

• The line will be positive.

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

• 4

• 6

• 8

• 10

If the ratio of boys to girls in a class is 3:4, how many boys are there if there are 20 girls?

• 15

• 25

• 10

• 30

What is the constant of proportionality?

• $3

• $4

• $2

• $9

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

Find the constant of Proportionality:

• 5

• 2.5

• 3

• 1.5

What is the unit rate in this proportional relationship?

• 60 miles/1 hour

• 120 miles/ 2 hours

• 1 mile/ 1 hour