AlgebraHardValue of a linear function at a negative input
Algebra practice question
For the linear function f, f(x) = 9 − 2x. What is the value of f(−2)?
Answer: 13
9 − 2(−2) = 9 + 4 = 13.
Common wrong answers
- If you answered 5
- 5 uses 9 − 4.
- If you answered 7
- 7 uses 9 − 2.
- If you answered -13
- −13 has the sign wrong.
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