What is the equation of the tangent line to the curve 6vx + y = 21 at the point (4, 3)? O () - 3) =(x- 4) o ( y - 3 ) = 12 ( X - 4 ) o (y - 3) = -4(x-4) o (y - 3) = 4(x-4) 1 N 3 4 5 6 7