alleryStart learning →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_
Keep practising Functions
Browse all Functions questions for ZIMSEC O-Level, or explore more Mathematics topics.
Related questions
For the curve given by y equals x squared, what is the average gradient between x = 1 and What does the amplitude of a sine graph measure?The gradient at a single point on a curve is the gradient of what?What is the average gradient between two points on a curve?In a many-to-one relation, what do two or more input values share?