Interpreting Graphs of Proportional Relationships

The video tutorial explains how to interpret graphs, focusing on proportional relationships. It begins with an introduction to graph interpretation, using a subway car speed graph as an example. The tutorial then details how to interpret ordered pairs, emphasizing the importance of understanding x and y coordinates. Finally, it discusses how to identify proportional relationships in graphs, highlighting the significance of the origin point.

What does the point (1/2, 1/4) represent on the subway car graph?

• The subway car travels 1/2 mile in 1 minute.

• The subway car travels 1 mile in 1/4 minute.

• The subway car travels 1/4 mile in 1/2 minute.

• The subway car travels 1/2 mile in 1/4 minute.

When interpreting an ordered pair, what three key points should be included in your sentence?

• Graph title, x-coordinate unit, y-coordinate unit

• Graph title, y-coordinate value, graph scale

• Graph title, x-coordinate value, graph color

• Graph title, x-coordinate value and unit, y-coordinate value and unit

What does the point (3, 1.5) indicate on the subway car graph?

• The subway car travels 1 mile in 3 minutes.

• The subway car travels 3 miles in 1 minute.

• The subway car travels 3 miles in 1.5 minutes.

• The subway car travels 1.5 miles in 3 minutes.

What is the cost of traveling 32 miles on the turnpike according to the graph?

• $3.20

• $2.40

• $4.20

• $2.00

What defines a proportional relationship on a graph?

• The line is curved.

• The line passes through or begins at the origin.

• The line is vertical.

• The line is horizontal.

Why is the helicopter graph not a proportional relationship?

• It is a straight line.

• It is a curved line.

• It never touches the origin.

• It starts at 0, 0.

What does the point (0, 0) signify in a proportional relationship?

• The relationship is non-linear.

• The relationship is undefined.

• The relationship is proportional.

• The relationship is inverse.