When would it be more useful to represent a proportional relationship with a graph rather then an equation

Is δ pmr similar to δ smn ? if so, which postulate or theorem proves these two triangles are similar?

We have enough material to build a fence around a station that has a perimeter of 180 feet the width of the rectangular space must be 3 1/4 feet what must the length be

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