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Which one of the following conditions must hold true for a point to lie on the graph…
MATHEMATICS · Single correct · AoPS · Mathematics · Functions · Functions
Problem
Which one of the following conditions must hold true for a point
(
x
0
,
y
0
)
(x_0, y_0)
(
x
0
,
y
0
)
to lie on the graph of the function
y
=
f
(
x
)
y = f(x)
y
=
f
(
x
)
? (a)
f
(
y
0
)
=
x
0
f(y_0)=x_0
f
(
y
0
)
=
x
0
(b)
y
0
=
f
(
x
0
)
y_0 = f(x_0)
y
0
=
f
(
x
0
)
(c)
f
(
x
0
)
=
0
f(x_0)=0
f
(
x
0
)
=
0
(d)
x
0
=
f
(
y
0
)
x_0 = f(y_0)
x
0
=
f
(
y
0
)
Related theory
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