For this, you have to plot the points on the graph. where it says right hand height, you go down to that number on the x axis (horizontal) and then up to the correct number for right foot length (vertical)
We have to find out the coordinates of two points to find out the slope. according to the figure, first point is x1 = 1 & y1 = 2 second point is x2 = 4 & y2 = 1
