Which equation has no solution? a.5m - 6 = 5m + 7 - m b.3w + 4 - w = 5w - 2(w - 2) c.7y + 9 = 7y - 6 d.4z + 8 = -4z - 2

the domain of a function is the set of input values, x , for which a function is defined. the domain is shown in the left oval in the picture below. the function provides an output value, f(x) , for each member of the domain.

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)