Answer:
just search what is standard deviation.
Step-by-step explanation:
it is the standard deviation is measure of how spread out numbers are.
please insert a picture
Factoring:
FOIL (first, outer, inner, last) method
(a+b)(c+d) = 0
ac+ad+bc+bd = 0
Zeros:
(x+a)(x+b) = 0
x+a = 0, x= 0-a
x+b = 0, x= 0-b
(-3y+x=0)+(3y-2x=6)
-x=6
x=-6
Plug x back in
-6-3y=0
-3y=6
y=-2
Your solution is (-6,-2)