Respuesta :

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Part A:
at the time x=4, the elevation = 3
at the time x=8, the elevation = 6
and 6-3=3in.
PART A ANSWER= 3in.

Part B:
the time period will be when the slope (y=mx+b) is the steepest. this would be from t=14 to t=18.
so, y=7.5-3= 4.5
ANS=4.5

The elevation change per minute between 4 minutes and 8 minutes is 0.75 and the fastest change in depression is between 14 minutes to 18 minutes.

What is the slope?

The slope is the ratio of rising or falling and running. The difference between the ordinate is called rise or fall and the difference between the abscissa is called run.

The graph is shown below.

The elevation change per minute between 4 minutes and 8 minutes will be

[tex]\rm Slope\ of \ elevation = \dfrac{6-3}{8-4} = \dfrac{3}{4} = 0.75[/tex]

The slope between 14 minutes and 18 minutes will be

[tex]\rm Slope\ of \ depression= \dfrac{7.5-3}{18-14} = \dfrac{4.5}{4} = 1.125[/tex]

More about the slope link is given below.

https://brainly.com/question/3605446

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