Answer:
decrease in attendence over the school year: line graph
number of dogs of ten students: stem and leaf
organize hights of 80 adults: bar graph
number of students in three different sports: line plot
Explanation:
line graph: used to show increase and decrease patterns
bar graph: used to organize different data without pattern
stem and leaf: used to record different numbers without organization
line plot: used to record amounts for different variation of things