Higher June 2024 Paper 2 Q18
18 The straight line P has equation \(5y + 2x = 7\)
Find the gradient of a straight line that is perpendicular to P
(2)
| Scheme | Marks |
|---|---|
Gradient of P = \(-\dfrac{2}{5}\) or \(y = \dfrac{7 - 2x}{5}\) oe or \(y = -0.4x + \ldots\) or \(\dfrac{5}{2}x\) or \(y = \dfrac{5}{2}x(+\ldots)\) | M1 |
Correct answer scores full marks (unless from obvious incorrect working) Answer: \(\dfrac{5}{2}\) | A1 |
| (2) | |
| (2 marks) |
Notes
M1: oe for the given equation rearranged so it is possible to see the gradient or for an equation with gradient of 2.5 oe or \(\dfrac{5}{2}x\) oe
A1: oe gradient must be stated but isw if seen and then used in an equation
SCB1 for the equation of a line with gradient \(\dfrac{5}{2}\) if \(\dfrac{5}{2}\) not seen separately and no other mark awarded