21. [-/1 Points] DETAILS SPRECALC7 2.6.099. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A class of fourth graders walks to a park on a field trip. The function y = f(t) graphed below gives their distance from school (in ft) t minutes after they left school. d (ft) 200 10 (a) What is the average speed going to the park? ft/min How long was the class at the park? min How far away is the park? ft t (min) (b) Graph the function y = 0.5f(t). d (ft) 200 t (min) 10 d (ft) 200 10 t (min) d (ft) d (ft) 200 t (min) n 10 200 10 10 t (min) How is the graph of the new function related to the graph of the original function? O The new graph is obtained by shrinking the original graph vertically by a factor of 0.5. The new graph is obtained by shrinking the original graph horizontally by a factor of 0.5. The new graph is obtained by stretching the original graph horizontally by a factor of 0.5. The new graph is obtained by shifting the original graph to the right 5 units. The new graph is obtained by stretching the original graph vertically by a factor of 0.5. What is the average speed going to the new park? ft/min. How far away is the new park? ft (c) Graph the function y = f(t - 10). d (ft) 200 d (ft) 200 t (min) -10 10 -10 10 10 t (min) d (ft) 200 t (min) -10 10 d (ft) 200 -10 10 t (min) How is the graph of the new function related to the graph of the original function? O The new graph is obtained by shifting the original graph downward 10 feet. The new graph is obtained by shifting the original graph to the right 10 minutes. The new graph is obtained by shifting the original graph upward 10 feet and to the right 10 minutes. The new graph is obtained by shifting the original graph to the left 10 minutes. The new graph is obtained by shifting the original graph upward 10 feet. How does the field trip described by this function differ from the original trip? The class walks 10 less feet and leaves 10 minutes earlier than it did in the original scenario. The class walks 10 less feet than it did in the original scenario. The class walks 10 more feet than it did in the original scenario. The class leaves 10 minutes earlier than it did in the original scenario. The class leaves 10 minutes later than it did in the original scenario.