Mathematics · Oct / Nov 2020 · Paper 41 · Question 10

A(–4, 0) B(1, 0) C(0, –4) [4]

B3 for A and B correct

Or B2 for B (–4, 0) and A (1, 0)

Or B1 for (x + 4)(x – 1) or for 2 −± 3 3 −× ×− 4 1 4 oe 2 and

B1 for A or B correct

B1 for C(0, –4) OR

SC2 for –4, 1 and –4 in correct positions on the graph

2x + 3 [ ± 0] final answer [2]

B1 for answer 2x +c or for ax + 3, a ≠ 0 or for correct answer seen

y = 7x – 8 oe [3]

B2 for answer 7x – 8 OR

M1 for [gradient =] 2(2) + 3 FT their part (a)(ii) of the form ax + b M1dep for substitution of (2, 6) into y = their mx + c oe

Correct sketch 0 90 180 270 360 [2]

B1 for one correct section out of 4 OR

B1 for two properties correct from

125.5 or 125.53 to 125.54 and 305.5 or 305.53 to 305.54 [3]

B2 for one correct angle

or B1 for –54.5 or –54.46… or for 2 angles with a difference of 180.