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Before watching the videos, think about and answer these questions to the best of
your ability.

The slope of the line tangent to the graph of at the input value is shown in the
graph below. The slope of this tangent line is 1.

Which of the following statements most accurately conveys what happens to
the value of as the value of varies by an infinitesimal amount away from
?

The value of changes by 1.The value of changes by 1 times 7.The value of
changes by 1 divided by 7.The value of changes by 1 times .The value of
changes by 1 divided by .

Suppose for . Which of the following could be the graph of ?

I onlyII onlyII and III onlyI and IV onlyIII and IV only

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