cillgnz cillgnz
  • 12-11-2019
  • Mathematics
contestada

help Solve and graph |-8x|<8
which is it

help Solve and graph 8xlt8 which is it class=

Respuesta :

rani01654 rani01654
  • 16-11-2019

Answer:

The correct option is B.

Step-by-step explanation:

We know, from the definition of |x|,

|-8x| = - 8x, when - 8x ≥ 0 i.e. x ≤ 0 ......... (1)

and |-8x| = 8x, when  - 8x < 0 i.e. x > 0 .......... (2)

Now, for x ≤ 0 {i.e. condition (1)}

- 8x ≤ 8, ⇒ x ≥ - 1 ......... (3)

Again, for x > 0 { i.e. condition (2)}

8x ≤ 8, ⇒ x ≤ 1 .......... (4)

So, combining conditions (3) and (4) we get  -1 ≤ x ≤ 1.

So, the correct option is B. (Answer)

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