PLEASE HELP ASAP, I appreciate it.
Find the equation of a parabola with vertex (2, -1), opens upward and has a focal width of 16.

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c