Answer:
true im not sure tho but trust me
Step-by-step explanation:
8ab-2b+ab-b
8ab+ ab= 9ab
-2b-b= -3b
Answer: 9ab - 3b

When you are asked what is the sin of π/6, or 30 degrees, you would look at the special triangle (30-60-90) to see that sin, or opposite over hypotenuse, of π/6 is 1/2. Arcsin, or csc, will present you with the ratio, 1/2, and ask for the angle. It's essentially working the question backwards.
I think it would be the first one because the y intercept is 8 and to find the gradient u do rise/run