Foundation November 2017 Paper 1 Q15
15
(a) Complete this table for \(y = x^2 - 5\).
| \(x\) | \(-2\) | \(-1\) | 0 | 1 | 2 | 3 | 4 |
| \(y\) | \(-4\) | \(-5\) | \(-4\) | 11 |
[2]
(b) On the grid below, draw the graph of \(y = x^2 - 5\) for the values of \(x\) from \(-2\) to 4.
[2]
(c) On the same grid, draw the line \(y = -2\). [1]
(d) Write down the \(x\) coordinates of the points where \(y = x^2 - 5\) and \(y = -2\) cross. [2]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(-1\) [\(-4\)] [\(-5\)] [\(-4\)] \(-1\) 4 [11] | 2 | B1 for 1 correct | |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| Correct curve | 2 | B1 for 4 or more points correctly plotted FT their table | Tolerance half small square |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| Ruled line \(y = -2\) drawn | 1 | Line from \(x = -2\) to \(x = 2\) | |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(-1.8\) to \(-1.6\) and 1.6 to 1.8 | 2 | B1 for 1 correct | FT from their graph \(\pm\) 0.1 for 2 or 1 mark Must have a curve and a straight line for FT |