Recall that an equation in slope-intercept form is as follows:

where m is the slope of the line, and (0,b) is the y-intercept.
Substituting m=-6, and b=-1/2 we get:

Simplifying the above result we get:

Answer:
The minimum number of sides that a polygon must have is 3
Answer:
The rock hits the ground between <u>2</u> seconds and <u>2.5</u> seconds after it is dropped
Step-by-step explanation:
The given table is presented as follows;

Therefore, the rock hits the ground between t = 2 seconds and t = 2.5 seconds after it is dropped.