Mathematics · Oct / Nov 2025 · Paper 42 · Question 11
0580
As printed in the paper
The question as text
The table shows some values for y x x 2 3 3 ¤ Å Ì . Where appropriate, values of y are given correct to 2 decimal places. x Å2 Å1.5 Å1 Å0.5 0 0.5 1 1.5 2 y Å1 4 3.88 3 2.13 2
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
11(a)[2]
2.63 and 3.38 [2]
B1 for each
11(b)[4]
Correct graph [4]
B3FT for 8 correct plots or B2FT for 6 correct plots or B1FT for 4 correct plots
11(c)[4]
y = 2 + 0.5x ruled –1.85 to –1.7 , 0.4 to 0.5, 1.25 to 1.4 [9]
M2 M1 for [y =] 2 + 0.5x oe soi e.g. x3 – 2x + 3 = 2 + 0.5x or y = k + 0.5x ruled or y = kx + 2 ruled, but not y = 2
A2 A1 for two correct values dep on M2 If M0 or M1 scored,
SC1 for three correct values
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