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Question

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anonymous · Answer

@rational  can you help me resolve this?

rational · Answer

Notice that the shaded region is centered around 4

rational · Answer

so the inequality would be
$$|x-4| \le 1$$

anonymous · Answer

right

rational · Answer

all the points that are less than or equal to 1 unit from 4

anonymous · Answer

how did you determine the direction in which the arrow went? Because 4 is bigger than 1?

anonymous · Answer

but at the end it's actually |x-4| <= 1 then.

anonymous · Answer

so I was initially wrong. I'm going to have to look all this over again.

rational · Answer

because the shaded region is with in 1 unit from 4

so the distance from 4 is less than or equal to 1

rational · Answer

|x-4| <= 1 

says

the distance from 4 to x is less than or equal to 1

rational · Answer

remember the distance between any two points on number line can be obtained by take the absolute value of difference of their coordinates

anonymous · Answer

okay thanks for correcting me on this thing. :)

rational · Answer

np:)

rational · Answer