Li believes that the graph shows a direct variation Why is incorrect in saying that the graph shows a direct variation?
The graph does not have a constant rate of change.
When the walue is 0, the y-value is

Me its important ! marge runs an ice cream parlor. her speciality is triple chocolate sundaes.she can prepare 1 sundae every 2 minutes, and she earns $1.20 for each sundae she makes . if she just makes sundaes for a single shift of at most 4 hours and at least 2 hours , which function relates her earnings to the number of minutes she works?