The Bridge to A level Test Yourself Mark Scheme Section Question Answer Marks Notes 1 1 x = ± 3 M2 Use of quadratic formula (M1) in x2 (M1) M1 x2 = 9 A1 cao 2(i) 4 (x 3)2 - 9 B1 a = 4 – B1 b = 3 M1A1 c = -9 2(ii) (3,-9) B2 B1 for each coordinate 2 1 B3 B2 for t omitted M1 for constructive first step M1 for finding square root of their ‘t2’ 2 M1 for 3x + mx = y + 5y oe M1 for x(3 + m) or ft sign error A1 3 M1 for multiplying by x-2 M1 for expanding brackets M1 for cllecting x and ‘other’ terms
The Bridge to A level Test Yourself Mark Scheme Section Question Answer Marks Notes 1 1 x = ± 3 M2 M1 A1 Use of quadratic formula (M1) in x2 (M1) x2 = 9 cao 2(i) 4 (x – 3)2 - 9 B1 B1 M1A1 a = 4 b = 3 c = -9 2(ii) (3,-9) B2 B1 for each coordinate 2 1 B3 B2 for t omitted M1 for constructive first step M1 for finding square root of their ‘t2’ 2 M1 M1 A1 for 3x + mx = y + 5y oe for x(3 + m) or ft sign error 3 M1 M1 M1 for multiplying by x-2 for expanding brackets for cllecting x and ‘other’ terms