Which variable in a function may be chosen freely?
AThe dependent one
BThe constant one
CThe independent one
DThe output one
Answer & Solution
Correct answer: C. The independent one
1. A function turns an input value into an output value.
2. The input is known as the independent variable, because its value can be chosen freely.
3. The calculated output is the dependent variable, because its value depends on the chosen input.
4. So only the input side of the function is free.
_Source: Siyavula Mathematics Grade 10 (Everything Maths, CC BY 4.0), Chapter 6: Functions_
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