The general expression for the parabola is

Where h and k represent the coordinates of its vertex.
h is the x-coordinate
k is the y-coordinate
If the vertex is (0,-14), then h=0 and k=-14, so the formula for the paravola will be:

Now using the coordinates of the point (5,6) to replace in the formula, you can clear the value of "a"
y= 6
x= 5

a=0.80
The formula for the parabola is
