Question 263155
step 1 - plug in the coordinates to get 2 equations as
(i) 3 = 4 + 2b + c
(ii) 3 = 16 + 4b + c
now take (ii) - (i) to get
(iii) 0 = 12 + 2b
so,
b = -6
substitute this back into (i) to get
(iv) 3 = 4 + (-6)2 + c
c = 11