An object's velocity can be determined by what two factors? *Its speed and direction
*Its acceleration and its mass
*Its displacement and distance

option a is right answer

Explanation:

velocity= displacement/ time

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)