"To find the slope of the line passing thru " (3,5), (8,15)To find the slope of the line passing thru (3,5),(8,15)
color(crimson)(Slope = " (rise) /( run) = "("change in y's ) / (change in x's )"Slope= (rise) /( run) = (change in y's ) / (change in x's )
:.color(blue)(Slope = m = (y_2 - y_1) / (x_2 - x_1)
color(brown)(Slope = m = (15 - 5) / (8 - 3) = 2