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URGENT !! EXTRA POINTS .

What is the amplitude of the graph?
A. 0
B. -4
C. 3
D. -3

URGENT !! EXTRA POINTS . What is the amplitude of the graph? A. 0 B. -4 C. 3 D. -3-example-1
User Gugu
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1 Answer

4 votes

Answer:

C. 3

Explanation:

Amplitude is a way of describing the height of a wave.

Key Terms

First, let's define some key terms of the parts of a wave. The highest point of the wave is the crest. The lowest point of a wave is the trough. The midline or resting point is the horizontal line halfway between the troughs and crests.

In this wave, the crests occur when y = -1 and the troughs occur when y = -7. The midline is y = -4

Finding Amplitude

From a graph, we can say that the amplitude is the distance from the resting position to the crest or trough. In this case, the midline is 3 units away from the crests and troughs. So, answer C is correct.

Since amplitude is a form of distance, it must be positive. This means that answers B and D cannot be correct. Additionally, it would not be a wave if there was no amplitude. An amplitude of 0 means that the graph is just a straight line. This means that A cannot be correct either.

User Shane Ray
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