Answer
$$x - y + 2z = -5$$
Work Step by Step
1. Write the general equation of a plane:
$$a(x - x_0) + b(y - y_0) + c(z - z_0) = 0$$
2. Substitute the values:
$$ ( 1 )(x - ( 1 )) + ( -1 )(y - ( 0 )) + ( 2 )(z - ( -3 )) = 0 $$
3. Simplify:
$$x - 1 - y +2z + 6 = 0$$ $$x - y + 2z = -5$$
