The height of a paper airplane after it is thrown off a roof is represented by the equation, y-8=-3(x-4), where x represents time in seconds and y represents height in feet. At
what speed does the airplane fall? (TEKS A3B-R)
A The airplane falls 3 feet per second.
B
The airplane falls 8 feet per second.
C The airplane falls 4 feet per second.
D The speed cannot be determined with the information give.
а
b
с
d