Question

A student made in finding the interval(s)

Answer 1

Answer:

Positive:  $(-1,3)$

Negative: $(-\infty,1)\cup (3,\infty)$

Step-by-step explanation:

The graph represents a parabola that has a maximum vertex at (1,4).

The portion of the graph above the x-axis is considered positive

For $-1\:$, the function is positive.

We can write this in interval notation as: $(-1,3)$

For $x\:>\:3$ or $x\:$ , the function is negative.

We can write this in interval notation as: $(-\infty,-1)\cup (3,\infty)$