If the given points are then the equation of the plane passing through these three points is given by the following equation.

Now substitute the values given

Now apply the determinant

(x + 5)(0 + 18) – y(0 + 9) + (z + 6)(12 – 30) = 0

(x + 5)(18) – y(9) + (z + 6)(– 18) = 0

18x + 90 – 9y – 18z – 108 = 0

Now divide both sides 9 then we get the plane equation as

2x – y – 2z – 2 = 0