Question

What is the range of the graph of y=-2x^2-8x-7 ?

Answer 1

this is a quadratic graph, we know that it is negative because of the negative sign in -2x^2
find the maximum point of the graph and you will be able to find the range

Answer 2

So when I find the vertex??

Answer 3

What do I do after that

Answer 4

that is the maximum point, so range should be (-infinity, maximum point)

Answer 5

What's infinity

Answer 6

These are my answer choices:
Y => 1
Y <= 1
Y <= -2
All real numbers

Answer 7

what did you get for the vertex?

Answer 8

(-2,3)

Answer 9

well the vertex is (-2,1), so you must have miscalculated. But using the vertex we can obtain the range: \[y \le 1\]

Answer 10

Oh yeah thanks

Answer 11

my pleasure