O-LevelMathematicsAlgebra and graphs4024/22 · May/June 2022 · Q29 Marks
A = 3p+q. Find q when A = 23 and p = 5.
- (a)A = 3p+q. Find q when A = 23 and p = 5.[2]
- (b)Expand and simplify 2(2x+5) +3(x−6).[2]
- (c)Solve 5y+3 = 1.[2]
- (d)Factorise 12r² - 8rs.[2]
- (e)Rearrange a = 3b to make b the subject.[1]
Mark scheme
Marking points from the official mark scheme (May/June 2022). The mark or mark type is shown in brackets.
- [2] M1 for 23 = 3×5+q oe or [q] = 23-3×5 ое
- [2] B1 for answer 7x + k or kx – 8 with k ≠ 0 or M1 for 4x + 10 + 3x – 18 or better
- [2] M1 for 5y = 1 – 3 or better or y + 3/5 = 1/5 or better
- [2] B1 for correct answer seen and spoilt or answer 4(3r² – 2rs) or r(12r – 8s) or 2r(6r - 4s)
- [1] a/3 or 1/3 a final answer
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