Question 246781
It is possible.
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{{{x<=(1/2)}}} is a vertical line that crosses the x-axis at point {{{1/2}}}
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Once you draw the vertical line, you need to shade the left side of the line since x is <= to {{{1/2}}}.
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The shading goes to infinity in three directions... y+, y-, and all x values to the left of (and including) {{{1/2}}}.
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Done.