Question

MEDAL and FAN
Identify the vertex for the graph of y = -2x2 - 12x + 1.

Answer 1

(-3,19)
(-3, 55)
(3, -57)
(3, -47)

Answer 2

When a function is in this form, the easiest way to find the vertex is to use the formula
x-coordinate of vertex is -b/2a

Answer 3

Find the x-coordinate, then substitute to find the y-coordinate.

Answer 4

Can you identify a, b, and c?

Answer 5

A= -2x^2
B= -12x
C= 1?

Answer 6

Close. Just the coefficients.

Answer 7

So, A=-2

Answer 8

B=-12

Answer 9

and C=1

Answer 10

Make sense?

Answer 11

Yes! Sorry I lost connection @JoannaBlackwelder

Answer 12

so -b/2a = 12/2*-2= 12/-4= -3

Answer 13

Yep, awesome! So, that is the x-coordinate. Can you sub in -3 for x and solve for y?