Question 920368
If you want to graph on the 2D xy coordinate plane, then...


Start off by graphing the horizontal line y = -3 (in green)


{{{ graph( 500, 500, -10, 10, -10, 10, 0,-3) }}}


Then make this a dashed line and shade above the boundary line (shaded region in blue)


{{{ graph( 500, 500, -10, 10, -10, 10, 0,-3,y>-3) }}}


Let me know if you need more help or if you need me to explain a step in more detail.
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Thanks,


Jim