You would set up an equation by doing msecond. Use a graph to determine the slope of a line. A line is decreasing and goes downwards from left to right.
Sc 2 If x is on top and y is on bottom.
If it is a linear relationship points make a line then you can pick ANY two pairs of. Solving for Slope 1. Sc 2 If x is on top and y is on bottom. The slope is the constant rate of changeof a line.