Does the quadratic have a maximum or minimum vertex, and does the parabola open up or down?

A)max/ opens up
B)max/ opens down
C)min/ opens up
D)min/ opens down

B)max/ opens down

Step-by-step explanation:

Parabola equation:

The equation of a parabola has the following format:

If , that is, x² is multiplied by a positive number, the function has a minimum value and the parabola opens up.

If , that is, x² is multiplied by a negative number, the function has a maximum value and the parabola opens down.

In this question:

From the graph, we already see that it opens down and has a max, and analitically, since , this is confirmed. The correct answer is given by option b.

irrational, cannot