The vertex form of a parabola with coordinates (h, k) is expressed as
y=a(x-h)²+k.
Here, the vertex is positioned at (0,0).
This simplifies to y=a(x-0)²+0, or y=a(x)², leading to y=ax².
Next, we need to determine the value of a.
Observing a specific point (14,-74), we have x=14 and y=-74.
This gives us the equation -74=a(14²).
Thus, we arrive at -74=196a.
Dividing each side by 196 results in a=-37/98.
Therefore, the equation is