For which equations is x = 9 a possible solution?

|x| = 9

-|x|=9

-|-x|=9

-|-x|=-9

|x|=-9

|-x|=9

|-x|=-9

Step-by-step explanation:

|x| = 9 is a solution. The range of the absolute value function is [0, infinity).

-|x|=9 not a solution. No absolute value function will return a negative result.

-|-x|=9 not a solution. - (x) = 9 is not true for x = 9.

-|-x|=-9 solution. - 9 = - 9 is true.