Hello, fabxx!

I don't get its explanations either . . .

5. A portion of the graph of is shown.Code:| * | * * * * * | * * *| * - - - -*- - -*-+- - -*- - - - - * - - - * | * * | * |

Which of the following could be ?

Note that the graph hasx-intercepts, two positive and two negative.four

One of the x-intercepts is 0; this graph would contain the origin..No

This quartic opens.No.down

This is a.Nofunction.cubic

To find the x-intercepts: ..No

Quadratic Formula: .

It can be shown that the right side is either negative or zero.

. . If it is negative, there are no real values of

. . If it is zero, there is only one x-intercept.

.Yes

To find the x-intercepts: .

Quadratic Formula: .

If isnegative, the right side is positive.

Hence, for , there are four x-intercepts:

. .