A math class is having a discussion on how to determine if the expressions 4x-X+5 a substitution. The class has suggested four different methods.
Which describes the correct method?
Both expressions should be evaluated with one value. If the final values of the expre
two expressions must be equivalent.
Both expressions should be evaluated with one value. If the final values of the expre
two expressions must be equivalent.
Both expressions should be evaluated with two different values. If for each substitute
expressions are positive, then the two expressions must be equivalent.
Both expressions should be evaluated with two different values. If for each substituted
expressions are the same, then the two expressions must be equivalent.