Answer:
Find two points on a graph, and count up/down, and left/right to find rise over run and simplify if you can. For example on this graph the slope from (0,1) to (3,0) is -2/6 or simplify to -1/3 because you go down two and right 6.
Step-by-step explanation:
315
Area = Length x Width
Area = 21 x 15
Area = 315
5 busses and vicke is right