Graphs 6
4 marks · NormalThe table shows some values for the function .
| x | -2 | -1 | 0 | 1 | 2 |
|---|---|---|---|---|---|
| y |
Complete the table.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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Must show: y-values correctly found for each x
Common mistakes: Incorrect sign when cubing negatives; Arithmetic mistakes in subtraction
Show mark scheme and worked solution
Marking points
A1 · 1 mark · Correct value for x = -2
A2 · 1 mark · Correct value for x = -1
A3 · 1 mark · Correct value for x = 0
A4 · 1 mark · Correct value for x = 1 and x = 2
Worked solution
Calculate y for each x:
| x | -2 | -1 | 0 | 1 | 2 |
|---|---|---|---|---|---|
| y | -8 - (-4) = -4 | -1 - (-2) = 1 | 0 - 0 = 0 | 1 - 2 = -1 | 8 - 4 = 4 |