There are infinitely many of course. One such would be y=4-x^2
I come to you with the need for some help....I'm an online student and have no assistance from the book in regards to this question;
Write an equation for a parabola that opens downward and has a vertex of (0,4)....as you see from my name this subject is not my strong suit....
My answer to this problem is simply y=0.0x-1.5 (I really don't feel to strongly that this is correct) thus is why I am here!
where is the vertex and is the directed distance from the vertex to the focus.
We want a vertex of (0,4), so substitute these values for and :
where is a constant. Choose any nonzero value for and you will get a parabola with a vertex at (0, 4). For the parabola to open downward, choose
That seems to make is a little clearer, I appreciate the assistance....I feel ackward asking for help since I already have Nursing degree and decided to go back to school this summer as sort of a mid-life crisis! Thank you for being here.....if you got a illness I can return the favor!!!!