Easy -1.8 This is a straightforward linear inequality requiring only basic algebraic manipulation: multiply both sides by 4, expand brackets, and isolate x. It's simpler than average A-level content, involving only routine procedural steps with no conceptual challenges or problem-solving required.
Accept \(-27/6\) or better; 3 for \(x = -4.5\) etc
[M1 for \(\times 4\)]
M1
Or Ms for each of the four steps carried out correctly with inequality [\(-1\) if working with equation] (ft from earlier errors if of comparable difficulty)
M1 expand brackets or divide by 3
M1
M1 subtract constant from LHS
M1
M1 divide to find \(x\)
M1
## Question 14:
| Answer | Marks | Guidance |
|--------|-------|----------|
| $x > -4.5$ o.e. isw www | 4 | Accept $-27/6$ or better; 3 for $x = -4.5$ etc |
| [M1 for $\times 4$] | M1 | Or Ms for each of the four steps carried out correctly with inequality [$-1$ if working with equation] (ft from earlier errors if of comparable difficulty) |
| M1 expand brackets or divide by 3 | M1 | |
| M1 subtract constant from LHS | M1 | |
| M1 divide to find $x$ | M1 | |