Answer:
The second and third
Step-by-step explanation:
(12+9x) - (6+3x) + 6x + -3
6+3x + 6x+-3
3+ 9x
I would help but I don't speak your language do u speak English not being mean
Answer:
y = 2x - 1
Step-by-step explanation:
(3, 5) (5, 9)
slope = (9-5)/(5-3) = 4/2 = 2
y = mx + b
5 = 2(3) + b
-1 = b
y = 2x -1