Question

http://prntscr.com/8vfmvq

Answer 1

5x^2 = 9x + 3

To get the roots, you could use the Quadratic Formula or use the online technology of the "Wolf."

http://www.wolframalpha.com/input/?i=5x%5E2+%3D+9x+%2B+3

Answer 2

I got B

Answer 3

I agree. The A option looked almost identical but was not. It led with a -9 which is incorrect.

Answer 4

true

Answer 5

The narrower graph would be the one which has a coefficient of x^2 that is greater than that of y = 3 x^2.

Which one do you think it is? We'll test after you decide and check it.

Answer 6

would it be D?

Answer 7

Let's check. The narrower graph will be inside the graph of y = 3 x^2

Look at the two graphs drawn on the same set of axes and see if you agree that
y = 11x^2 is inside.

http://www.wolframalpha.com/input/?i=y%3D+11x%5E2%2C+y+%3D+3x%5E2

Answer 8

Is the blue graph inside the one in pink?

Answer 9

it is

Answer 10

Yes. And, it is considered narrower.

Answer 11

ok ty