Jack and jill had 3 pails of water. each trip up the hill, jack and jill obtained 3 more buckets of water. which of the graphs below represents jack and jill's number of pails over time?

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.