Hey togo.

Q7 is almost right: you did the subtraction the wrong way around (it should be 6-4 = 2).

Q6 is correct.

Q4 is correct.

Q2 is not right since 6(1)^2 - 3 = 6 - 3 = 3 instead of 33 - 3 = 33. Also the equation of a normal is m1*m2 = -1 which means the gradient of the normal is -1/3. Try doing this one again.

Q1B is correct.