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O-LevelMathematicsAlgebra and graphs4024/11 · May/June 2019 · Q163 Marks

c = (3b² - 2a) / 5 Rearrange the formula to make b the subject.

Mark scheme

Marking points from the official mark scheme (May/June 2019). The mark or mark type is shown in brackets.

[3] sqrt((5c+2a)/3) oe final answer M1 for correct first step e.g. 5c = 3b² – 2a or better M1 FT their first step to b² = ... M1 FT their formula to square root

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About this question

Topic: Algebra and graphs, O-Level Mathematics (syllabus 4024). Structured question, 3 marks.
Source: O-Level Mathematics, May/June 2019 Paper 1 Variant 1, question 16.

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