You can compute the slope of a line by using the slope

You can compute the slope of a line by using the slope formula. This is given by:
slope,m=(change in y-axis)/(change in x-axis)
            =(Δ y-axis)/(Δ x-axis)
Given the points (x1,y1) and (x,y) from a linear graph, then:
slope m will be:
           m=(y-y1)/(x-x1)

Ithink it should be 55.