Mathematics · Oct / Nov 2021 · Paper 22 · Question 15
0580
As printed in the paper
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15(a)[3]
[y =] 3x + 7 final answer [3]
M1 for 31 1 6 − . oe 8 3 −
M1 for correct substitution of (3, 16) or (8, 31) into y = (their m)x + c
15(b)[1]
–2 [1]
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