If two lines l and m have equations y = -x + 6, and y = -2x + 6, what is the probability that a point randomly selected in the 1st quadrant and below l will fall between l and m? Express your answer as a decimal to the nearest hundredth.
I would suggest graphing the lines as below.
Then find the are below line L 1/2 b * h ( 18 units2 )
Find the area below line M 1/2 b * h (9 units2 )
so the area between them is 1/2 of the area below line L Probability is thus 1/2 = .50