Use a Relationship to Graph a Line | 8.EE.B.5

The video tutorial explains how to graph a proportional relationship by determining ordered pairs and plotting them on a coordinate plane. The example used is the cost of pens at a school store, where each pen costs $1.50. The tutorial guides viewers through selecting points, plotting them, and drawing a line to represent the relationship. It emphasizes checking the graph for accuracy by plotting additional points. The lesson concludes with a summary of the graphing process.

What is the cost of one pen at the school store?

• $1.50

• $2.00

• $1.00

• $2.50

If you buy 2 pens, how much will you spend?

• $3.50

• $2.50

• $2.00

• $3.00

Which point represents the origin on the graph?

• (3, 4.50)

• (2, 3.00)

• (1, 1.50)

• (0, 0)

What is the total cost for purchasing 4 pens?

• $6.00

• $7.00

• $5.00

• $4.50

How do you verify that your plotted line is correct?

• By making sure the line is vertical

• By ensuring the line is horizontal

• By plotting a third point and checking if it lies on the line

• By checking if the line passes through the origin