Teaching DSSSB PGT Mock Test 2025 Mathematics Relations and Functions Types of Functions

If f : R → R : f(x) = 4x + 3, then f -1(x) = ?

1
4x - 3
2
\(\frac{1}{{\left( {4x - 3} \right)}}\)
3
\(\frac{1}{4}\left( {x-3} \right)\)
4
None of these
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