I have 3 points A,B and C, with coordinates (0,1,1) (-2,-1,-5) and (1,-1,0)

I have found vectors AB and AC, the found the equation of the plane ABC as

r= (0,1,1) + λ(-2,-2,-6) + μ(1,-2,-1). the brackets in the 'r=' formula are vertical brackets. I am having trouble verifying that A,B and C lie in the plane

5x + 4y - 3z = 1