Analyzing Proportional Graphs

Describe the situation.

• The volume of the balloon increases at a constant rate, then stays constant, then increases, then constant, and increases at a constant rate.

• The volume of the balloon increase at a constant rate, decreases, then stays constant, then increases, then constant, and increases at a constant rate.  

Describe the situation. 

• Grams Decrease at a decreasing rate.

• Grams decrease at a constant rate.

What is happening at D?

• Stationary

• Accelerating

• Fast steady speed; moving away from the starting position

• Slower steady speed; moving away from the starting position

At what time did runner A pass runner B?

• 0 seconds

• 1 second

• 2 seconds

• 3 seconds

 Every morning, Tom walks along a straight road from his home to the bus stop. Below, is a graph representing Tom’s trip to school.
- What is the distance covered through the second segment, which is between 50 seconds, and 70 seconds?

• 40 meters

• 60 meters

• 80 meters

• 20 meters

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 the graph proportional?

• Proportional

• non proportional