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Problem
Problem
If
x
2
+
y
2
=
5
x^2 + y^2 = 5
x
2
+
y
2
=
5
, what is the equation of the normal line at
(
−
2
,
1
)
(-2, 1)
(
−
2
,
1
)
? Give your answer in
y
=
m
x
+
b
y = mx + b
y
=
m
x
+
b
format.
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