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Affine functions
Identifying an affine function
MCQ
Which of the following functions are linear functions?
Possible answers
f
(
x
)
=
5
x
−
3
f(x) = 5x - 3
f
(
x
)
=
5
x
−
3
f
(
x
)
=
x
2
+
1
f(x) = x^2 + 1
f
(
x
)
=
x
2
+
1
f
(
x
)
=
−
2
x
f(x) = -2x
f
(
x
)
=
−
2
x
f
(
x
)
=
x
f(x) = \sqrt{x}
f
(
x
)
=
x
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