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Square Root Functions

This topic deals with the square-root functions. We learn to find the domain of square-root functions. We also learn to graph the square-root functions.
Practice Question
1

The function y = 8√x gives the speed in feet per second of an object in free fall after falling ‘x’ feet. Find the speed of an object in free fall after it has fallen 16 feet.

 
Possible Answers
Your Answer
Correct Answer
A)

32 ft/s
B)

24 ft/s
C)

64 ft/s
D)

56 ft/s
Practice Question
2

The function y = 8√x gives the speed in feet per second of an object in free fall after falling ‘x’ feet. Find the speed of an object in free fall after it has fallen 25 feet.

 
Possible Answers
Your Answer
Correct Answer
A)

32 ft/s
B)

24 ft/s
C)

40 ft/s
D)

56 ft/s
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