Grade 9 · Math
Evaluate a quadratic function practice
Evaluate a squared-variable function at signed inputs.
Opening your practice adventure…
Try a sample
If f(x) = 5x2 + (2), what is f(0)?
- 0
- 2
- 5
- 6
See the answer & why
2
f(0) = 5 × (0)2 + (2) = 2.
A little hint: Square the input before multiplying by the coefficient.
A teaching tip
Square the entire signed input before multiplying by its coefficient.