Which of the following properties is being used in line 2? 1. (6x + 9) + 3x

2. 6x + (9 + 3x)

3. 6x + (3x + 9)

4. (6x + 3x) + 9

5. 9x + 9

A. Distributive

B. Combine like terms

C. Associative property of addition

D. Commutative property of addition

Me i need ! find the asymptote and determine the end behavior of the function from the graph. the asymptote of the function is= blank 1 . for very high x-values,y =blank 2 options for blank 1 x=2 x=-2 x=3 x=-3 blank 2 options moves towards negative infinity moves toward the horizontal asymptote moves toward the vertical asymptote moves toward positive infinity