Answer:
Option C and E
Step-by-step explanation:
A linear function is represented by a straight line when graphed.
Linear function means a straight line with uniform rate of change.
A. The temperature rises and falls means rate of change is not uniform. So the function representing temperature as a function of time is not a linear function.
B. A base ball was hit into outfield which achieved maximum height but goes down. So rate of change in height is not uniform so function representing height as a function of time is not linear.
C. Car goes 55 mph on the highway so change in distance with respect to time will be a linear function.
D. A child grew 2 inches this year and 1 inch last year so rate of change in height will not be a linear function.
E. Movie director makes 2 movies per year. The number of movies represented by a function in terms of years will be linear showing a straight line.
Option C and E are correct.
