If velocity is positive, which would most likely yield a negative acceleration?
a. a final velocity that is faster than an initial velocity.
b. a time that is less than a half hour.
c. an initial velocity that is faster than a final velocity.
d. a time that is greater than a half hour.

B. A time that is less than a half hour.

Acceleration = Velocity / Time
Greater velocity / Lesser time
Greater Velocity = greater acceleration

Proportionality or variation is state of relationship or correlation between two variables It has two types: direct variation or proportion which states both variables are positively correlation. It is when both the variables increase or decrease together. On the contrary, indirect variation or proportion indicates negative relationship or correlation. Elaborately, the opposite of what happens to direct variation. One increases with the other variables, you got it, decreases. This correlations are important to consider because you can determine and identify how two variables relates with one another. Notice x = y (direct), y=1/x (indirect)