Grade 11 · Math
Evaluate an inverse linear function practice
Reverse a nonconstant linear rule to recover an input.
Opening your practice adventure…
Try a sample
If f(x) = 5x + (2), what is f−1(32)?
- 7
- 8
- 6
- 5
See the answer & why
6
Solve 5x + (2) = 32. Subtract 2, then divide by 5: x = 6.
A little hint: An inverse asks which input produced the stated output.
A teaching tip
Undo addition or subtraction before undoing multiplication.