Given:
The given equation is

To find:
The vertex, focus, and directrix.
Solution:
The equation of a parabola is
...(i)
where, (h,k) is vertex,
and directrix is 
We have,

It can be written as

...(ii)
On comparing (i) and (ii), we get

Vertex of the parabola is (2,3).



Therefore, the focus of the parabola is
.
Directrix of the parabola is



Therefore, the directrix of the parabola is
.
Answer:

Step-by-step explanation:
Given.
Sally started with two feets of cloth.
Total cloth = 
She used
of a foot of the cloth to make a pillow cover.
And another
of a foot of the cloth to make a table cloth.
She used total cloth to make a pillow cover and table cloth = 

Total used cloth by Sally = 
The equation for remaining cloth
remaining cloth = total cloth - used cloth
remaining cloth 
remaining cloth 
remaining cloth 
remaining cloth 
Sally has remaining cloth =
feets
A nice graphing utility can be found at the link below, along with your graph and the corresponding table of values.
https://www.desmos.com/calculator/qe8pnxwqdb