Question

The graph shows the height of a tire's air value y, in inches, above or below the center or the tire, for a given number of seconds, x. How many degrees does the valve move per second?

Answer 1

the answer would be 4

Answer 2

Answer: The valve move 120° per second.

Step-by-step explanation:

Since we have given a figure.

There is period of 2π in 3 seconds.

That means, it covers 2π degrees in every 3 seconds.

As we need to find the number of degrees the valve move per seconds.

We will use "Unitary method":

In every 3 seconds , Number of degrees would be 360°.

So, in every 1 second, Number of degrees would be

$\dfrac{360^\circ}{3}=120^\circ$

Hence, The valve move 120° per second.