Books at a library sale are sold for $3.50 each. a function, y = 3.50x can be used to generate an input/output table for this scenario. which statement is true about an accurate graph of this data?

the data is discrete, so the points are connected with a line.
the data is discrete, so the graph is a series of unconnected points.
the data is continuous, so the graph is a series of unconnected points.
the data is continuous, so it does not matter whether or not the points are in a line.