Proportional Graphs

Find the missing value in the proportion, y.

(answer 'y=...')

Find the missing value in the proportion, f.

(answer 'f=...')

Find the Constant of Proportionality for this graph. (Make sure to simplify)

What makes a graph proportional?

• Straight line

• The line goes through the origin

• Curvy line

• Straight line and the line goes through the origin

Is the graph proportional or non proportional?

• Proportional

• Non proportional

A Canoe Rental company's prices are represented in the graph. What is the meaning of the point (1, 12)?

• The company charges $1 for 1 hour.

• The company charges $12 for 1 hour.

• The company charges $1 for 12 hours.

• The company charges $12 for 12 hours.

The graph shows the cost of grapes when purchased by the pound.

What is the cost for 1 pound of grapes?

• $0.70

• $1.25

• $2.00

• $1.50

Is this table proportional or non-proportional?

• Proportional

• Non-Proportional

Why does this graph show a non-proportional relationship?

• Because it is proportional

• It goes through the origin

• It does not go through the origin

• It is a straight line

Which statement best describes the relationship between x and y in the table?

• Proportional

• Not Proportional