O-LevelMathematicsAlgebra and graphs4024/11 · May/June 2024 · Q183 Marks
In this table, p is directly proportional to q². [Table with p and q rows: p values 12, a, 48; q values 2, 7, b] Calculate the value of a and the value of b.
- (a)Calculate the value of a and the value of b.[3]
Mark scheme
Marking points from the official mark scheme (May/June 2024). The mark or mark type is shown in brackets.
- [3] [a =] 147 and [b =] [+] 4
- M2 for 7²x12/2² oe or 48x2²/12 oe
- OR M1 for [k=] 12/2² if p = kq² used
- M1FT for a = their k × 7² or for b = sqrt(48/their k)
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