Answer:
The answer is:
Explanation:
The equation of a parabola in the intercept form is given by:

Where:
p and q are x-intercepts
Now, we know the parabola intercepts at x=1 and x=3.
So we will have:

Using the point (-1,16) we could find the value of a.



Therefore, the equation is:



The answer is:
I hope it helps you!