Graphs 6
3 marks · EasyThe function is to be plotted for .
Complete the table for the given values of .
(a)
[3 marks]
| x | y |
|---|---|
| -1 | |
| 0 | |
| 1 | |
| 2 |
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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(a) — · must show (-1,-1), (0,0), (1,3), (2,12)
Must show: y(-1) = -1, y(0) = 0, y(1) = 3, y(2) = 12
Common mistakes: Cubic sign errors; Incorrect calculation of x^3
Show mark scheme and worked solution
Marking points
A1 (a) · 1 mark · Calculates y(-1) = -1 correctly.
A2 (a) · 1 mark · Calculates y(0) = 0 and y(1) = 3 correctly.
A3 (a) · 1 mark · Calculates y(2) = 12 correctly.
Worked solution
Substitute each value of x:
| x | y |
|---|---|
| -1 | -1 |
| 0 | 0 |
| 1 | 3 |
| 2 | 12 |