Question

Tommy paid $8.25 for three pounds of gummy candy.Tommy created a graph from the data on his chart. Is his graph correct? Why or Why not?

Answer 1

Notice that the relationship between the number of pounds of gummy candy and the number of dollars that that number of pounds costs is a function because there cannot be two prices for the same number of pounds.

Now, notice that the graph that Tommy creates does not represent a function because it fails the vertical line test at x=3.

Also, from the given table we get that (4,11) is a point of the graph.

Then the graph that Tommy creates is not correct.

Answer: No, because the graph does not represent a function and the point (4,11) is not part of the graph.