<, > - opened circle
≤, ≥ - closed circle
<, ≤ - draw line to left
>, ≥ - draw line to right
Answer in the attachment.
<,> - dotted line
≤, ≥ - solid line
<, ≤ - shadow to left
>, ≥ - shadow to right
x = -6 - its a vertical line
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