What is the slope of the line? y = 3x + 9 question 3 options: a)9 b) 3 c) 12 d) 6

The answer is 3..y=mx+b where m is the slope

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.