Question

For which equations is x = 9 a possible solution? Check all that apply.

|x|=9
-|x|=9
-|-x|=9
-|-x|=-9
|x|=-9
|-x|=9
|-x|=-9

Answer 1

See below.

Explanation:

|x|=9 Yes x = 9

-|x|=9 No -9 ≠ 9

-|-x|=9 No -I-9I ≠ 9

-|-x|=-9 Yes -I-9I = - 9

|x|=-9 No |9| = 9

|-x|= 9 Yes |-9|= 9

|-x|=-9 No |-x| ≠ -9