Mary and cindy can do a typing test in 2 hours. mary can do it in 3 hours less than cindy. how many hours can cindy do it in?

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.