find the directrix focus and roots of the

Question

Find the directrix, focus and roots of the parabola from the given data.

Find (a) the directrix, (b) the focus and (c) the roots of the parabola y=x²- 5x +4

sketching the graph of given equation.

a) Graph  x²/ 16 - y²/ 25 = 1   show how you arrived at your graph by determining the (b) x-intercepts,(c) extent of  the graph and the (d) asymptotes.