Question 906506
{{{y <= 2x}}}
{{{x + y < 4}}}
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{{{y <= 2x}}}....1
{{{y <-x+4}}}....2
____________________subtract 2 from 1 as you do equalities 


{{{y = 2x}}}....
{{{y =-x+4}}}....2
__________________

{{{y-y = 2x-(-x+4)}}}
{{{0= 2x+x-4}}}
{{{0= 3x-4}}}
{{{4= 3x}}}
{{{4/3= x}}}

solutions:

{{{x>=4/3}}}, for   {{{y <-x+4}}}

{{{x<4/3}}},  for {{{y<=2x}}}

{{{ graph( 600, 600, -20, 20, -20, 20,  y<=2x, x + y < 4) }}}