in the examples of a computerized drilling machine that were presented in your reading material, downward movement of the drill bit toward the metal plate was in the

Answer 1

a. positive direction of the x axis
b. neg. direction of the x axis
c. neg. direction of the y axis
d. neg. direction of the z axis

Answer 2

Hey, how would we know the particular coordinate system used by your drill press ?
Chances are it is negative z