Question

What is the equation of the graph below?
https://vcsohio.brainhoney.com/Resource/22138800,AB4,0,B,7/Assets/72147_53b5ab10/0001g_36.gif

Answer 1

y = - (x - 3)2 + 1
y = - (x + 3)2 + 1
y = (x - 3)2 - 1
y = (x + 3)2 - 1

Answer 2

Vertex form is a(x - h)^2 +k where (h, k) is the vertex.
"a" is going to be positive b/c the parabola opens upward, so we can cross out A and B.

Answer 3

so we write h = 3 and k = -1 as the vertex is (-3,-1)

Answer 4

So, a(x-3)^2-1?

Answer 5

Remember 2 negatives make a positive. The 3 is negative and there is a minus sign in the equation as well, therefore h = +3

Answer 6

Oh. What's next?

Answer 7

I know it's not B.

Answer 8

In which of the options is "a" positive and h = +3 and k = -1? :)

Answer 9

:O oh lol thanks!

Answer 10

Sure! =]

Answer 11

I GOT A 100% ON MY SEGMENT EXAM!!!

Answer 12

YAY! :D

Answer 13

:))))))))) <3