SOLVE THE EQUATION M-2N=9 IF THE DOMAIN IS {-1,0,5}
"Domain" comes before "Range" in the dictionary, and
M comes before N in the alphabet, so I will assume
the values in the domain are for M, and so the values
in the range will be for N.
Post again if your teacher reverses the roles of M and N.
Plug in -1, 0 and 5 for M, then solve for N:
M - 2N = 9 M - 2N = 9 M - 2N = 9
-1 - 2N = 9 0 - 2N = 9 5 - 2N = 9
-2N = 9+1 -2N = 9 -2N = 9-5
-2N = 10 N = -9/2 -2N = 4
N = -5 N = -2
So the range is {-5, -9/2, -2}
Edwin
