120 000 2 A1 Total 2 marks 2 = 6 2x drawn from 4 B4 For a correct line between = and = 4 y x x – −2 = to x −2 = 4 x B3 For a correct straight line segment through at least 3 of (−2, 10) (−1, 8) (0, 6) (1, 4) (2, 2) (3, 0) (4,−2) OR for all of (−2, 10) (−1, 8) (0, 6) (1, 4) (2, 2) (3, 0) (4, −2) plotted but not joined B2 For at least 2 correct points plotted B1 For at least 2 correct points stated (may be in a table) OR for a line drawn with a negative gradient through (0, 6) OR a line with gradient −2 Total 4 marks 3 a 224 ÷ 8 oe 2 M1 28 A1 b 523 411 (=112) or 3 M1 – or (=127.3...) or 100×“1.273” 100 M1 dep – or 100 “127.3” – 27.3 A1 27.25 27.3 –
120 000 2 A1 Total 2 marks 2 y = 6 – 2x drawn from x = −2 to x = 4 4 B4 For a correct line between x = −2 and x = 4 B3 For a correct straight line segment through at least 3 of (−2, 10) (−1, 8) (0, 6) (1, 4) (2, 2) (3, 0) (4,−2) OR for all of (−2, 10) (−1, 8) (0, 6) (1, 4) (2, 2) (3, 0) (4, −2) plotted but not joined B2 For at least 2 correct points plotted B1 For at least 2 correct points stated (may be in a table) OR for a line drawn with a negative gradient through (0, 6) OR a line with gradient −2 Total 4 marks 3 a 224 ÷ 8 oe 2 M1 28 A1 b 523 – 411 (=112) or or (=127.3...) 3 M1 or 100×“1.273” – 100 or “127.3” – 100 M1 dep 27.3 A1 27.25 – 27.3
igcse-9-1-maths-practice-paper-5-mark-scheme.docx