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Evaluate formulas from real-world contexts

Year 6 maths · Fieldbook Learning

Name ______________________ Date __________

Put the given number in place of each letter. Then work out the powers, the multiplying and the adding, in that order.

f(x) = 4x + 9. Find f(1).
f(x) = −3x + 9. Find f(2).
f(x) = −3x + 7. Find f(5).
f(x) = −5x − 3. Find f(−3).
f(x) = −2x − 4. Find f(1).
f(x) = −2x − 7. Find f(−4).
f(x) = 5x − 9. Find f(0).
f(x) = −4x − 6. Find f(−3).
f(x) = 3x − 5. Find f(2).
f(x) = −3x + 9. Find f(5).
f(x) = −2x² − 9x + 4. Find f(−4).
f(x) = 5x² − 3x + 7. Find f(−2).
f(x) = x² − 4x + 5. Find f(−3).
f(x) = −5x² − 9x + 4. Find f(−2).
f(x) = −5x² + 6x + 1. Find f(1).
f(x) = x² + 8x + 9. Find f(−5).
f(x) = 4x² − x − 6. Find f(4).
f(x) = x² + 4x + 7. Find f(4).
f(x) = 4x² − 8x + 8. Find f(3).
f(x) = 4x² + x − 4. Find f(3).

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Answer key: Evaluate formulas from real-world contexts

13
3
-8
12
-6
1
-9
6
1
-6
8
33
26
2
2
-6
54
39
20
35