Answer:
Step-by-step explanation:
-3x<9
+3x to ech side
0<9+3x
-9<3x
-3<x
or x>-3
(1)
(f+g)(x) = 6x^2+2x-7+4x-3=6x^2+6x-10
(f-g)(x)=6x^2+2x-7-4x+3 = 6x^2-2x-4
(2)
(f+g)(x)=2x-3x+1-2x=-3x+1
(f-g)(x)=2x-3x-1+2x=x-1
4) (-2,3) ; (-1,-2)
5) line is parallel to x-axis. So, slope= 0
6) (1,1) ; (-2, -1)