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Evaluate a quadratic function

Grade 8 math · Fieldbook Learning

Name ______________________ Date __________

Replace x with the number in the brackets and work it out.

f(x) = −x² − 3. Find f(3).
f(x) = 3x² − 10. Find f(4).
f(x) = −3x² − 10. Find f(3).
f(x) = 2x² + 3. Find f(0).
f(x) = −3x² − 13. Find f(−5).
f(x) = 4x² + 2. Find f(1).
f(x) = −3x² − 7. Find f(4).
f(x) = −3x² − 5. Find f(−6).
f(x) = 3x² + 16. Find f(−5).
f(x) = −x² + 19. Find f(−8).
f(x) = −3x² − 13. Find f(−6).
f(x) = −x² + 2. Find f(4).
f(x) = x² − 22. Find f(4).
f(x) = x² − 11. Find f(10).
f(x) = −2x² − 10. Find f(12).
f(x) = −2x² − 14. Find f(4).
f(x) = −x² + 44. Find f(8).
f(x) = −4x² − 2. Find f(12).
f(x) = −3x² − 41. Find f(−10).
f(x) = 3x² − 25. Find f(−6).

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Answer key: Evaluate a quadratic function

-12
38
-37
3
-88
6
-55
-113
91
-45
-121
-14
-6
89
-298
-46
-20
-578
-341
83