Start this lesson as soon as students walk in by playing the song - "What does the Fox Say?" and you set the tone for the day. What does the graph say when you read it for meaning - rate of change and initial amount?
This lesson is another in a bundle of lessons to teach and re-enforce the meaning of graphs and what we learn from reading linear graphs. Slope is an important part of linear equations and while formulas are fine, understanding is better. Use this one day lesson to help students learn about understanding vocabulary such as initial amount (y-intercept), rate of change (slope), and any points along the line are solutions to the equation and real world situation.
Be careful, the second graph, Starbucks, is incorrectly scaled along the y-axis. This is one of the most common mistakes my students make - trying to skip space between numbers when scaling off the graph. It brings up a good conversation about the appearance of a linear pattern but it isn't really because slope is different between different points. The scaling error causes the rate of change to be not constant. I correct the graph by the second model when the discussion of how to calculate slope occurs.
There is a second copy of the activity pages at the end in which all the graphs are correctly labeled. If your students are not having an issue with scaling their graphs you may wish to use the copy that is scaled correctly throughout.