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Mathematics
Mathematics
Problem
Which of the following statements is always true for any point
(
x
,
y
)
(x,y)
(
x
,
y
)
on the parabola
y
2
=
4
a
x
y^{2}=4ax
y
2
=
4
a
x
with
a
>
0
a>0
a
>
0
? a) If
y
<
0
y<0
y
<
0
, then
x
<
0
x<0
x
<
0
. b) If
y
<
0
y<0
y
<
0
, then
x
=
a
x=a
x
=
a
. c) If
y
<
0
y<0
y
<
0
, then
x
>
0
x>0
x
>
0
. d) If
y
<
0
y<0
y
<
0
, then
x
=
0
x=0
x
=
0
.
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