Higher November 2024 Paper 5 Q10
10 A straight line has equation \(y = 4x + 9\).
(a) Write down the gradient of the line. [1]
(b) Casey says the graph of \(y = 4x + 9\) passes through the point (3, 23).
Is Casey correct?
Show how you decide. [2]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 4 | 1 | ||
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| No and 4 × 3 + 9 = 21 oe Or No and (23 – 9) ÷ 4 = 3.5 oe Or No the equation would need to be \(y = 4x + 11\) | 2 | M1 for 4 × 3 + 9 or for 23 – 9 ÷ 4 | For 2 marks no errors seen accept No and (3, 21) or (3.5, 23) For M1 allow no/incorrect evaluation |