Evaluate function notation
Evaluate f(a) for a linear or quadratic function given in function notation. Unlimited questions, five difficulty levels, and a full worked solution every time — free.
Try one
Given the function below, evaluate f(2).
f(x) = −4x - 3
Answer: -11
See one solved, step by step
Given the function below, evaluate f(4).
f(x) = 3x2 - 5x - 1
📘 Worked solution
1f(4) = 3(4)2 - 5(4) - 1Substitute x = 4 into the formula for f(x).
2= 27Simplify the powers and products, then add the terms together.
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