The graph shows the distance y, in feet, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x.

How many seconds are required for the pendulum to move from its resting position, swing in one direction and return to its resting position?

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2.5 seconds

Step-by-step explanation:

Resting position is at y = zero which mean x intercept

So, we need to find the time between two consecutive points of intersection with the x-axis.

Which mean it is the half period of the given function as it is a sine wave

From the graph we can deduce that

2.5 seconds are required for the pendulum to move from its resting position, swing in one direction and return to its resting position.

the answer to your question a or b but i am pretty sure it is b. i hope this : )

step-by-step explanation: