Question 753783
{{{ graph( 500, 500, -10,10, -10, 10, abs(-2x)) }}}

domain:

 *[tex \LARGE \{\forall\,x\,|\,x\,\in\,\mathbb{R}\}]

range:

 *[tex \LARGE \{\forall\,h\,|\,h\,\in\,\mathbb{R}\,\,h>=0\}]