Will Medal!!!

The vertex of the graph of a function is (2, 0) and the y-intercept is (0, –4). Which of the following could be the equation of the function?

Question

Will Medal!!!

The vertex of the graph of a function is (2, 0) and the y-intercept is (0, –4). Which of the following could be the equation of the function?

wolfman77 · Answer

@baru  Can you help?

baru · Answer

have you learnt the PEMDAS rule ?

wolfman77 · Answer

Wait, thats the wrong question!

wolfman77 · Answer

Okay, there. Sorry about that.

baru · Answer

are there any options to go with it?

wolfman77 · Answer

No.

baru · Answer

are you sure?
the question is phrased as though we have options

"which of the following..."

wolfman77 · Answer

Well, that's just how it is, I guess. Cause there ain't any options.

baru · Answer

i'm sorry, i dont know :(

wolfman77 · Answer

okay, thanks anyway.

wolfman77 · Answer

@Decarr432  ?

decarr432 · Answer

I don't know love Im sorry @mathmale

wolfman77 · Answer

Okay, thanks though.

mrnood · Answer

quote
"Which of the following could be the equation of the function?"

without those options - we cannot help you answer

wolfman77 · Answer

Well, they didn't give me any options. Thanks anyway guys!

mathmale · Answer

"The vertex of the graph of a function is (2, 0) and the y-intercept is (0, –4). Which of the following could be the equation of the function?"  Whether or not you have the answer choices, you should be able to solve this problem.  

You're given the vertex (2,0) and the y-intercept (0,-4).  Since there IS a vertex, let's assume that the graph is that of a parabola.  The "vertex form" of the equation of a parabola is 

$$y-k=a(x-h)^2$$

mathmale · Answer

We could substitute the coordinates of the given points into this equation and solve the resulting equation for the coefficient, "a."  

could you do this, and could you then share your work?