Question

Find the directrix of the parabola y = (1/8)(x – 5)2 - 3.

Answer 1

y= -5

Explanation:

rewrite as standard form
`4.2(y-(3-))=(x-2)^(2)`

(h.k) = (2, -3), P=2

y= -3 -P

y= -3 -2

y= -5

Answer 2

I have no idea. Quick question for you though since we are working on similar stuff. How do I write this equation in graphing form: y=2x^2-12x+19