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Mathematics
Mathematics
Problem
If
(
−
2
,
7
)
(-2, 7)
(
−
2
,
7
)
is the highest point on the graph of
y
=
−
2
x
2
−
4
a
x
+
k
y = -2x^2 - 4ax + k
y
=
−
2
x
2
−
4
a
x
+
k
, then
k
k
k
equals: (a) 31 (b) 11 (c) -1 (d)
−
1
/
3
-1/3
−
1/3
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