Interpreting Graphs of Proportional Relationships

The video lesson focuses on interpreting graphs of proportional relationships. It begins with an introduction to the concept and explains how to interpret ordered pairs on a graph. The lesson includes practice exercises for interpreting graph points, emphasizing the importance of understanding the x and y coordinates. It also covers identifying proportional relationships in graphs, highlighting that such relationships are represented by lines passing through the origin. The lesson concludes with a call to action for viewers to subscribe for future content.

What does the title of a graph help you understand?

• The type of graph used

• The number of points on the graph

• The story or context of the graph

• The colors used in the graph

What is an ordered pair in a graph?

• A pair of titles for the graph

• A pair of numbers representing a location on a graph

• A pair of lines intersecting on the graph

• A pair of colors used in the graph

What does the x-coordinate represent in the given subway car graph?

• The cost of the subway ride

• The time in minutes

• The distance traveled by the subway car

• The speed of the subway car

What are the three key points to include when interpreting an ordered pair?

• Title of the graph, color of the graph, type of graph

• X-coordinate value, y-coordinate value, type of graph

• Title of the graph, x-coordinate value and unit, y-coordinate value and unit

• Title of the graph, number of points, type of graph

What does the point (3, 1.5) represent in the subway car graph?

• 1.5 miles in 3 minutes

• 3 miles in 1.5 minutes

• 3 minutes in 1.5 miles

• 1.5 minutes in 3 miles

What is a proportional relationship in a graph?

• A relationship where the line never touches the origin

• A relationship where the line passes through or begins at the origin

• A relationship where the graph is a bar chart

• A relationship where the graph is a circle

Does the graph of the subway car speed represent a proportional relationship?

• Yes, because the line passes through the origin

• No, because the line is straight

• No, because the line does not pass through the origin

• Yes, because the line is curved

Why is the helicopter graph not a proportional relationship?

• Because the graph is a bar chart

• Because the graph starts at (0, 35) and not at the origin

• Because the graph is a circle

• Because the graph is a straight line

What does the point (32, 2.40) represent in the turnpike graph?

• 32 miles and a cost of $2.40

• 2.40 miles and a cost of $32

• 32 minutes and a cost of $2.40

• 2.40 minutes and a cost of $32

Does the turnpike travel graph represent a proportional relationship?

• No, because the line is straight

• Yes, because the line is curved

• No, because the line does not begin at (0, 0)

• Yes, because the line begins at (0, 0)