Rachel has just completed a study of precipitation in three different locations over the course of a year. The data she wishes to present in graph form is shown in the table below, with precipitation listed in inches. Boston
Phoenix
Minneapolis
January
3.27
0.45
1.04
February
3.44
0.48
.76
March
3.10
0.71
1.12
April
3.89
0.31
2.10
May
3.75
0.17
3.15
June
3.12
0.09
5.11
July
2.98
0.11
5.78
August
3.07
0.33
4.65
September
3.15
0.52
3.61
October
3.55
0.40
3.22
November
3.42
0.42
2.34
December
3.44
0.29
1.84

Rachel wants her graph to emphasize the relation of each city’s precipitation to each other city’s at each point in time. What kind of graph would be appropriate?
a.
bar graph
b.
line graph
c.
pictograph
d.
histogram