Question 422950
"a is less than or equal to -2" means {{{a<=-2}}}. It is represented as <font size="8">(</font>*[Tex \LARGE \bf{-\infty,-2}]<font size="8">]</font> in interval notation and it's graph on a number line looks like this


{{{drawing(500,80,-12, 8,-10, 10,
number_line( 500, -12, 8),


arrow(-2,0,-12,0),
arrow(-2,0.30,-12,0.30),
arrow(-2,0.15,-12,0.15),
arrow(-2,-0.15,-12,-0.15),
arrow(-2,-0.30,-12,-0.30),




circle(-2,0,0.2),
circle(-2,0,0.15),
circle(-2,0,0.1),
circle(-2,0,0.2-0.02)
)}}}


Note: there is a closed circle at x=-2


If you need more help, email me at <a href="mailto:jim_thompson5910@hotmail.com?Subject=I%20Need%20Algebra%20Help">jim_thompson5910@hotmail.com</a>


Also, please consider visiting my website: <a href="http://www.freewebs.com/jimthompson5910/home.html">http://www.freewebs.com/jimthompson5910/home.html</a> and making a donation. Thank you


Jim