O-LevelMathematicsAlgebra and graphs4024/11 · Oct/Nov 2020 · Q34 Marks
Solve the equation 9- 5x = 2x−12.
- (a)Solve the equation 9- 5x = 2x−12.[2]
- (b)Simplify 16 + 2y – 3(3 – y).[2]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2020). The mark or mark type is shown in brackets.
- [2] 3
- B1 for 5x + 2x = 9+ 12 oe
- [2] 5y +7 final answer
- M1 for final answer 7 + ky or for k + 5y for any k≠ 0 or for 16 + 2y – 9 + 3y seen
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