Mathematics · Oct / Nov 2021 · Paper 21 · Question 17
0580
As printed in the paper
The question as text
y x x 1 3 2 = - - Make x the subject of the formula. x = [4]
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y + 2 [x = ] oe final answer y + 3 [4]
M1 y (1 – x) = 3x – 2 or better
M1 for correctly isolating x terms on one side FT their first step/bracket expansion M1dep for correctly removing factor of x FT their previous step M1dep for correct division to isolate x Max 3 marks for an incorrect answer
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