Question

13.

Graph y= x2+2. Identify the vertex of the graph. Tell whether it is a minimum or maximum.

A. (2, 0); maximum

B. (2, 0); minimum

C. (0, 2); maximum

D. (0, 2); minimum

Answer 1

D. (0, 2); minimum

Explanation:

Use the formula

x = − b/ 2 a

to find the maximum and minimum.

( 0 , 2 )

Graph the parabola using the direction, vertex, focus, and axis of symmetry.

Direction: Opens Up

Vertex:

( 0 , 2 )

Focus:

( 0 , 9 /4 )

Axis of Symmetry:

x

=

0

Directrix:

y

=

7

4

x

y

−

2

6

−

1

3

0

2

1

3

2

6

Rewrite in vertex form and use this form to find the vertex

( h , k )

.

( 0 , 2 )