y= -13 over 4
Vertex:
(
4
,
−
3
)
(
4
,
-
3
)
Focus:
(
4
,
−
11
4
)
(
4
,
-
11
4
)
Axis of Symmetry:
x
=
4
x
=
4
Directrix:
y
=
−
13
4
y
=
-
13
4
Select a few
x
x
values, and plug them into the equation to find the corresponding
y
y
values. The
x
x
values should be selected around the vertex.