0.84: you would do .82/.98 (the probability of orchids and roses divided by probability of roses)
11x + 2 = 13x, 9x - 4 = 5x, 5x + 13x = 18x
Slope intercept form is y=mx+b. since there is no b term, the y intercept is 0. since there is a 9 in the m term, your slope will be nine. based on those two things, you need a point at (0,0) and (1,9). on the other end, your point will be (-1,-9). then draw a straight line through. hope this helps :)