Question 989379
-10 < 5 -2x < -5 
subtract 5 
-15 < -2x < -10
divide by -2, note that this reverses the < signs
7.5 > x > 5
this tells us that 5 < x < 7.5
{{{ graph( 300, 200, -10, 10, -10, 10, 5 < x < 7.5) }}}