Proportional Graphs Review

Presentation

•

Mathematics

•

7th Grade

•

Hard

Joseph Anderson

FREE Resource

8 Slides • 4 Questions

Lesson 2.5:

Graphing Proportional Relationships

Definition:

Proportional Graph: A proportional graph looks like a straight line going through the origin (0,0) and can be represented by the equation y = kx.

Which graph represents a proportional relationship?

Multiple Choice

Is this a proportional graph?

Yes

Multiple Choice

Is this a proportional graph?

Yes

Graph the equation y = 2x

Decide which graph is proportional:

The graph shows a proportional relationship between the
cups of flour a baker uses and the number of cookies
made.

●What does the point (0,0) represent?

●What does the point (1,18) represent?

Multiple Choice

This graph relates water use in gallons compared to the minutes that pass. What does the point (2,10) represent?

2 gallons of water used in 10 minutes

10 gallons of water used in 2 minutes

5 gallons of water used in 1 minute

1 gallon of water used in 5 minutes

Use the graph to create an equation:

Multiple Choice

Write an equation for this graph.

y = 6x

y = $\frac{1}{6}x$

y = 12x

y = $\frac{2}{12}x$

Conclusion: Write two complete sentences about what you know.

Lesson 2.5:

Graphing Proportional Relationships

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