Identify the function shown in this graph. .
A. y=x+4
B. y = -x+ 4
C. y = -x-4
D. y= x - 4

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance