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Mathematics 20 Online
OpenStudy (yacoub1993):

What are the solutions of the equation? Graph and check the solutions. | x | + 10 = 1 A. x = 9 B. x = 9 or x = –9 C. x = 0 D. no solution

OpenStudy (yacoub1993):

i think its B

Directrix (directrix):

| x | + 10 = 1 | x | = 1 - 10 | x | = -9 @Yacoub1993 --> Check your answers to see if the absolute value of each of them is -9.

OpenStudy (yacoub1993):

am i correct

OpenStudy (yacoub1993):

@Directrix

Directrix (directrix):

Let's check your answers of x = 9 or x = –9. | x | = -9 Test x = 9 Is it true that | 9 | = -9 ? Yes or No? @Yacoub1993

OpenStudy (yacoub1993):

no

Directrix (directrix):

So, Option B is not correct. Look at the expression | x | = -9 and ask yourself if there is any real number that has an absolute value that is negative.

OpenStudy (yacoub1993):

no so the only choice will D

Directrix (directrix):

I agree. That is what I got.

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