The number line that represents the solutions to Ix - 5| = 1 is the number line in the second option.
To solve absolute value equations like |x-5| = 1
We will write that
x - 5 = 1 and x -5 = -1
For the first equation
x - 5 = 1
Add 5 to both sides
x - 5 +5 = 1+5
∴ x = 6
For the second equation
x -5 = -1
Add 5 to both sides as well
x -5 +5 = -1 +5
∴ x = 4
Hence, x = 6 and x = 4
From the image, the second option is dotted (blue) at 4 and 6 on the number line.
Hence, the number line that represents the solutions to Ix - 5| = 1 is the number line in the second option
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