Question

. y=-3x2 + bx + c; (1, 0)
find the unknown coefficients

Answer 1

`y = - 3 {x}^(2) + bx + c \\ when \: (1,0) \\ 0 = - 3( {1})^(2) + b(1) + c \\ 0 = - 3 + b + c \\ b + c = 3 - - - (.) \\ at \: (0,0) \\ 0 = c \\ c = 0 \\ hence \: b = 3`