Which equation represents a parabola with a vertex at the origin and a focus at (0,-1)

We are given parabola with vertex at origin (0,0) and given focus (0,-1).

We know vertex is given by (h,k).

Therefore, h=0 and k=0.

Formula for focus is (h, k + p).

On comapring with given focus

k+p = -1.

Plugging value of k=0 in above equation we get

0 +p =-1.

p = -1.

Parabola equation is  4p (y - k)=(x - h)^2

Plugging values of h, k and p in parabola equation, we get

Dividing both sides by -4, we get

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part a

in a city ice cream is mostly only bought when the temperature is very high as ice cream cools down our

so we can derive the conclusion that as the temperature increases the number of ice creams sold also increases

part b

y intercept is 5

slope is 2

happy to

pls mark as brainliest

351°f

step-by-step explanation: