Answer:
Option C.
Explanation:
The given table represents a linear function.
If a linear is graphed by a line and the line passes through two points (x, y) and (x', y'), slope of the line is calculated by the formula
Slope =

Since line passes through two points (-2, -2) and (-1, 1)
Therefore, slope =

=

= 3
Slope of the line will be 3.
Option C. is the answer.