(a) 2 correct points plotted 2 12 e.g (0, 4) and (3, 0) 4x + 3y = 12 (b) 3 Correct region B2 for = 4 and = drawn consistent shading and x y −3 correct for at least two inequalities B1 for = 4 and = drawn x y −3 3 M1 13 OR OR (isolating c2) (oe) M1 dep A1
12 (a) 2 correct points plotted 2 e.g (0, 4) and (3, 0) 4x + 3y = 12 (b) 3 Correct region B2 for x = 4 and y = −3 drawn and consistent shading correct for at least two inequalities B1 for x = 4 and y = −3 drawn 13 OR OR (isolating c2) (oe) 3 M1 M1 dep A1
10_practice_tests_set_7_-_paper_2h_mark_scheme_final.docx