Answer:
m = (70-10)/(70-50) = 3 , slope
Explanation:
m =(y2-y1)/(x2-x1) = gradient/ slope
choose any points on the graph for each x that corresponds to the y,
say choose, where x =50, y =10 (make this x1 and y1)
second step choose, another points to make Y2 and X2
where x=70, y=70, make these , y2 and x2
thus, m = (70-10)/(70-50) = 3