(3) (b) M1 or their Correct differentiation A1 Correct normal gradient with no At gradient of normal = -t A1 P, errors seen. Applies or using in an attempt to find c. Their must be M1 mN different from their and must mT be a function of t. cso **given answer** A1 Special case if the correct gradient is quoted could score M0A0A0M1A1 (5) – (8 marks) Marks Scheme Notes Attempt to multiply the 4(a) right way round with at least M1 4 correct elements has coordinates (1,1), (1,2) and (4,2) Correct coordinates or A1 or NOT just vectors (2) (b) Reflection B1 Reflection in the line = y x = B1 y x the the = etc. Provided both features are y x Allow ‘in axis’ ‘about line’ mentioned ignore any reference to the origin unless there is a clear contradiction. (2) (c) 2 correct elements M1 Correct matrix A1 Note that scores M0A0 in (c) but allow all the marks in (d) and (e) (2) (d) M1 “-2”x”2” – “0”x”0” -4 A1 Answer only scores 2/2 (2) scores M0
(3) (b) or their M1 Correct differentiation A1 At P, gradient of normal = -t Correct normal gradient with no errors seen. A1 Applies or using in an attempt to find c. Their mN must be different from their mT and must be a function of t. M1 cso **given answer** A1 Special case – if the correct gradient is quoted could score M0A0A0M1A1 (5) (8 marks) Scheme Notes Marks 4(a) Attempt to multiply the right way round with at least 4 correct elements M1 has coordinates (1,1), (1,2) and (4,2) or NOT just Correct coordinates or vectors A1 (2) (b) Reflection in the line y = x Reflection B1 y = x B1 Allow ‘in the axis’ ‘about the line’ y = x etc. Provided both features are mentioned ignore any reference to the origin unless there is a clear contradiction. (2) (c) 2 correct elements M1 Correct matrix A1 Note that scores M0A0 in (c) but allow all the marks in (d) and (e) (2) (d) “-2”x”2” – “0”x”0” M1 -4 A1 Answer only scores 2/2 scores M0 (2)