Draw two graphs, one that represents a function and the other that is not a function. Using the vertical line first show that the second graph is not a function

1jessica's home town is a mid-sized city experiencing a decline in population. the following graph models the estimated population if the decline continues at the same rate. select the most appropriate unit for the measure of time that the graph represents. a. years b. hours c. days d. weeks

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|

Find the distance between the pair of points a(-1,8) and b(-8,4)