Answer
$$-x + 4y -3z =16$$
Work Step by Step
Step-1: Write the general equation of a plane:
$$a(x - x_0) + b(y - y_0) + c(z - z_0) = 0$$
Step-2: Plug the values to obtain:
$$ ( -1 )(x - 1) + 4(y -2) + ( -3 )(z+3) = 0 $$
Step-3: After simplifying, we get:
$$-x +1 + 4y - 8 -3z-9 =0\\ -x + 4y -3z =16$$
