For which real values of is the function given by injective?

MATHEMATICS · Single correct · CBSE · Mathematics · Relations and Functions · Relations and Functions

Problem

For which real values of

k

is the function

f:\mathbb{R}\to\mathbb{R}

given by

f(x)=kx+2

injective? (a)

k>0

(b) All real

k

(c)

k\neq 0

(d)

k\geq 1

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