At the point (-1, -3, 1),
x = -1, y = -3 , z = 1
To plot point (-1, -3, 1).
First, we move 1 unit out of the x-axis from its origin.
Next, we move 3 units to the left of the y-axis from its origin.
and finally,
We move 1 unit up from origin to 1 on the y-axis
