Find the equation of a line that is parallel to the line x = -9 and contains the point (-7,3). The equation of the parallel line is . (Type an equation.)

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.