Question 1106146
<pre>
{{{y>-3}}}

-------------------&#9675;===================================>
-9 -8 -7 -6 -5 -4 -3 -2 -1  0  1  2  3  4  5  6  7  8  9

{{{t>6}}}

----------------------------------------------&#9675;========>
-9 -8 -7 -6 -5 -4 -3 -2 -1  0  1  2  3  4  5  6  7  8  9

{{{t<=-3}}}

<===============&#9679;---------------------------------------
-9 -8 -7 -6 -5 -4 -3 -2 -1  0  1  2  3  4  5  6  7  8  9

Use an open circle "&#9675;" with < or >.
Use a closed circle "&#9679;" with <u><</u> or <u>></u>.

Edwin</pre>