Answer:
Slope: 
Y-int: 9
Step-by-step explanation:

-6x -6x
-2y = -6x + 18
----- ------------
-2 -2
y = 3x + 9
15n-18. This is 3(5n-6) because 3 times 5n is 15n and 3 times 6 is 18.
Answer:
n = 16
Step-by-step explanation:
3^4(81^2) = 3^n
3^4(3^4) = 3^n
3^16 = 3^n
n = 16