(-2)+(-2)+(-2)+(-2)
=-2-2-2-2
= -8
Step-by-step explanation:
Solve the system via elimination (add the equations):
-10y + 9x = -9
+ (10y + 5x = -5)
-----------------------
14x = -14
x = -1
Plug in the value for 'x' into the second equation:
-10y + 5(-1) = -5
Solve for y:
-10y - 5 = -5
--> -10y = 0
--> y = 0
x = -1
y = 0
The slope-point formula:

The formula of a slope: 
We have:

Substitute and calculate:

Answer:
1/4>1/5
Step-by-step explanation:
1/4=0.25
1/5=0.20
>= greater than
0.25>0.20
1/4>1/5