Question

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

Answer 1

see below

Explanation:

`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.