<u>Given</u>:
Given that the graph of a line with coordinates (-3,2) and (0,-2)
We need to determine the slope of the line parallel to the given line.
<u>Slope</u>:
The slope of the line can be determined using the formula,

Substituting the coordinates (-3,2) and (0,-2), we have;

Simplifying, we get;

Thus, the slope of the given line is 
<u>Slope of the parallel line:</u>
The parallel lines always have the same slope.
Thus, the slope of the parallel line is 
Hence, the slope of the parallel line is 
Therefore, Option c is the correct answer.