Either i or -i, because nothing times itself will be negative so -538's square root is imaginary :)
The given vertex and Focus are of a vertical parabola having an opening downward as the focus is in downward direction as the vertex.
Focus of the parabola can be written as :
where, h and k are coordinates of vertex
so,
So, the equation of parabola can be written as :
plug in the values ~
Answer:
Step 2
Step-by-step explanation:
Process of elimination can help us here.
Step one, write a system of equations. This is a given, so this can't be wrong.
Step three, graph the equations. At first, this may seem wrong, but it works because of step four, Identify the x-value at the point of intersection. Neither of these can be wrong.
That leaves us with step two.
This figure is a square pyramid. If you have vertical cross sections through the vertex of the pyramid, then you end up with a triangle as figure 1 shows. See the attached image below. Figure 2 shows a trapezoid forms when the vertical cross section is not through the vertex.