# How to graph cubics?

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For question a, can somebody please tell me how to get to the answer in the photo?

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For question a, can somebody please tell me how to get to the answer in the photo?

##### 1 Answer

Apr 9, 2017

#### Explanation:

The general equation of a cubic polynomial is:

From looking at the graph in the question labelled '(a)', it appears that:

Slope of

Assuming (1) through (4) above are true:

Hence

Hence

[D] in [C}

[A], [D] and [E] in [B]

Hence: