Question 359482
Closed dot means that point is part of the solution.
So {{{f(x)=2}}} when {{{x>=1}}} would look like,
{{{drawing(300,300,-5,5,-5,5,
grid(1),
blue(circle(1,2,0.05)),
blue(circle(1,2,0.1)),
blue(circle(1,2,0.12)),
blue(circle(1,2,0.15)),blue(circle(1,2,0.17)),
blue(circle(1,2,0.2)),
blue(line(1,2,10,2)),graph(300,300,-5,5,-5,5,0))}}}
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Open dot means that the point is not part of the solution but represents a boundary.
So {{{f(x)=2}}} when {{{x>1}}} would look like,
{{{drawing(300,300,-5,5,-5,5,
blue(circle(1,2,0.2)),grid(1),
blue(line(1,2,10,2)),graph(300,300,-5,5,-5,5,0))}}}
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