Proportional Equations Graphs

Look at the graph, which ordered pair represents the unit rate?

• (0, 0)

• (1, 0.75)

• (4, 3)

• (8, 6)

The table shows John's wages based on the number of hours he works. What equations would be used for the table? Use h for hours and d for dollars

• d = 9h

• h = 9d

The graph shows the distance a plane travels. What does the point (2, 10) on the graph represent?

• The plane travels 2 miles in 10 minutes.

• The plane travels 10 miles in 1 minute.

• The plane travels 10 miles in 2 minutes.

• The plane does not travel at a constant rate.

The graph shows the distance a plane travels. Use one of the points on the graph to reduce to the unit rate.

• 5 miles per minute

• 5 minutes per mile

• 10 minutes per mile

• 10 miles per minute

Which graph is proportional?

• A

• B

• C and D

• All of the graphs are proportional

The cost of five pounds of grapefruit is $6.00. The cost per pound of grapefruit remains the same regardless of the quantity purchased. Graph the relationship between y, the total cost of grapefruit purchased, and x, the weight in pounds of the grapefruit purchased.Plot two points on the coordinate grid.

What makes a graph proportional?

• Straight line

• The line goes through the origin

• Curvy line

• Straight line and the line goes through the origin

Answer explanation

A graph is proportional when it is a straight line and passes through the origin.

Which graph best represents the relationship between x and y in the equation y = 3.5x?

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A snail moving at a constant rate traveled a distance of 2 feet in 1/2 hour. Create a graph to represent y, the number of feet the snail traveled in x hours. Select two points on the coordinate grid that represent the situation.