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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 only II only II and III only I and IV only III and IV only
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