A1 for oe or 0.82 or 82% 18 0.98 B1 cao Paper: 1MA1/2H Question Working Answer Mark Notes 19 Proof M1 for a method to find coordinates of (−1, or (3, 1) M N −1) (supported) M1 for method to find gradient of or MN PR or for method to find column vector for or PR or for differences of coordinates and differences of coordinates for or x y MN PR A1 for gradients of and ie ½ oe MN PR , or for column vectors of and and MN PR, or for differences of coordinates and of coordinates for andPR x y MN C1 for conclusion from reasoning and correct working 1MA1/2H Question Working Answer Mark Notes 20 68.5 B1 for = 90° or angle = 90°, may be seen on diagram OAB OCB
A1 for oe or 0.82 or 82% 18 0.98 B1 cao Paper: 1MA1/2H Question Working Answer Mark Notes 19 Proof (supported) M1 for a method to find coordinates of M (−1, −1) or N (3, 1) M1 for method to find gradient of MN or PR or for method to find column vector for or PR or for differences of x coordinates and differences of y coordinates for MN or PR A1 for gradients of MN and PR , ie ½ oe or for column vectors of MN and PR, and or for differences of x coordinates and of y coordinates for MN andPR C1 for conclusion from reasoning and correct working 1MA1/2H Question Working Answer Mark Notes 20 68.5 B1 for OAB = 90° or angle OCB = 90°, may be seen on diagram
10b_1ma1_2h_-_november_2017_mark_scheme.docx