Question

The set of possible values of n is {-2,1,4}. What is the set of possible values of m if 3m = n - 7?

A. {-27,-18,-9}
B. {-9,-6,-3}
C. {-6,-3,0}
D. {-3,-2,-1}

Answer 1

D

Explanation:

first u make m the subject which is

m=(n-7)/3

then u substitute n values into the equation one by one