Proportional Problems

If the larger figure STUVWX is the original drawing, what is the scale factor to go to the smaller figure?

• 2

• 3

You are given a rectangle that is 14 inches by 7 inches.

Which of the following is a scale copy of it?

• 28 inches by 14 inches

• 10 inches by 4 inches

• 21 inches by 14 inches

Ricky walks 3 miles in a half-hour.

How many miles per hour do they walk?

• 3 mph

• 6 mph

• 9 mph

• 12 mph

Ricky watches 1/4 of a movie in a half-hour.

How much of the movie do they watch in a full hour?

• 1/4

• 1/2

• 3/4

• 1

Ricky watches 1/4 of a movie in a half-hour.

How long will it take for them to finish the whole movie?

• 1/2 hour

• 1 hours

• 1.5 hours

• 2 hours

Suppose you are given a scale drawing of pool.

The drawing measures 3 inches wide by 4 inches long.

The actual pool measures 15 feet wide.

What is the scale factor to go from the drawing to the actual pool?

• 5

• 12

• 45

• 1/5

Suppose you are given a scale drawing of pool.

The drawing measures 3 inches wide by 4 inches long.

The actual pool measures 15 feet wide.

What is the length of the actual pool?

• 15

• 20

• 60

• 75

Suppose you are given a scale drawing of pool.

The drawing measures 3 inches wide by 4 inches long.

The actual pool measures 15 feet wide by 20 feet long.

What is the area of the actual pool?

• 12

• 35

• 60

• 300

Write an equation for this relationship.

• y=1/5x

• y=1/2x

• y=2x

• y=5x

What makes a graph proportional?

• Straight Line

• The line goes through (0,0)

• Curvy line

• Straight line and passes through (0,0)