Easy -1.8 This is a straightforward recall question requiring only the basic definition of modulus and the ability to sketch a V-shaped graph with vertex at x=3/2. It involves minimal calculation and is a standard textbook exercise with no problem-solving element, making it significantly easier than average A-level questions.
Reflection of their straight line to form V shape for positive \(y\) only
M1
Symmetrical V shape through \((0, 3)\) with vertex at \((1.5, 0)\)
A1
condone branches of different lengths; points may be identified from numbered scale or written separately
[3]
## Question 4:
| Answer | Marks | Guidance |
|--------|-------|----------|
| $y = 2x - 3$ correct in first quadrant | M1 | may be implied by reflection or by **A1** |
| Reflection of their straight line to form V shape for positive $y$ only | M1 | |
| Symmetrical V shape through $(0, 3)$ with vertex at $(1.5, 0)$ | A1 | condone branches of different lengths; points may be identified from numbered scale or written separately |
| | **[3]** | |
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