This problem is about mean, mode, median.
I need someone's help on figuring out this process.

How do you determine whether a relationship represented as as graph is linear or nonlinear

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove