Higher June 2023 Paper 1 Q13
13 \(A\) is the point with coordinates \((-5, 12)\)
\(B\) is the point with coordinates \((19, -48)\)
Find an equation of the straight line that passes through the points \(A\) and \(B\)
(3)
| Scheme | Marks |
|---|---|
| eg (gradient =) \(\dfrac{12 - -48}{-5 - 19}\;(= -2.5)\) oe | M1 |
| eg \(12 = \text{``}{-2.5}\text{''} \times -5 + c\) oe \(y - 12 = \text{``}{-2.5}\text{''}(x - -5)\) oe | M1 |
| Correct answer scores full marks (unless from obvious incorrect working) Answer: \(y = -2.5x - 0.5\) | A1 |
| (3) | |
| (3 marks) |
Notes
M1: for a method to find the gradient
M1: ft their gradient
A1: oe eg \(y - 12 = -2.5(x + 5)\) or \(2y + 5x + 1 = 0\)