Question What is the equation of a graph with a slope of 4 that passes through the point (0.9)? Write the
equation in the form y = mx + b.

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.