Common Core 8.F

Grade 8 Functions Test Generator

Create Grade 8 functions tests with printable PDF format and answer keys.

Designed for function notation, table analysis, slope context, and linear model comparison.

Create Grade 8 functions test →

Sample questions

1. If f(x)=2x+3, find f(5)
2. Point-slope question: slope through (1,2) and (4,11)
3. Write linear rule for table increasing by 4 from y=2 at x=0
4. Is relation {(1,2),(2,2),(3,5)} a function?
5. If f(x)=3x-1 and f(x)=20, solve x

Answer key preview

1. 13

2(5)+3 = 13.

2. 3

(11-2)/(4-1) = 9/3 = 3.

3. y = 4x + 2

Slope 4 and intercept 2.

Skills assessed

  • Function notation
  • Linear rule writing
  • Slope meaning
  • Table/graph interpretation

Common student mistakes

  • Confusing input and output
  • Incorrect slope calculation
  • Mixing intercept with slope

Related topic pages

Grade 8 linear equations test →Grade 8 pythagorean theorem test →Grade 8 systems of equations test →Grade 8 full test generator →

FAQ

What functions skills are assessed?
Function notation, input-output rules, slope interpretation, and linear function comparison.
Does it include answer key previews?
Yes. Generated tests include full step-by-step keys.