In a function, how many output values does each input value have?
AExactly two
BAt least three
CExactly one
DNone at all
Answer & Solution
Correct answer: C. Exactly one
1. A function is a relationship between two variables.
2. An independent input variable has exactly one dependent output variable.
3. That single output is what makes the relationship a function rather than any pairing.
_Source: Siyavula Mathematics Grade 11 (Everything Maths, CC BY 4.0), Chapter 5: Functions_
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