function evaluation

Practise function evaluation with an original VectorPaths question, worked explanation and related VCE Methods practice.

1 practice marks

Original practice question

If $g(x) = 3x^2 + 2$, evaluate $g(-1)$.

Worked explanation

• Substitute x = -1 into f(x)

  \[f(-1) = 3(-1)^2 + 2\]

• Calculate the result

  \[f(-1) = 5\]

5

Original VectorPaths practice; not an official VCAA question or marking rubric.