How do you identify the important parts of $f(x)= x^2 + 1$ to graph it?

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Answer 1 · 2016-05-06T11:10:47

see below

$f(x)=ax^2+b$

First, sign value of $a$ . If sign is negative $(-)$ then the graph should be maximum. If sign is positive $(+)$ then the graph should be minimum.

Second, value of $b$ , Value of $b$ is y-intercept.

How do you identify the important parts of f(x)= x^2 + 1 f(x)= x^2 + 1 to graph it?