Question 485216
x+y <10

you need to graph it.

First find the boundary of the inequality 
let
y = -x+10

for x=0, y = 10 (0,10)
For y=0, x=10 (10,10) 

Plot the points and draw the line

{{{drawing(300,300,-15,15,-15,15,circle(0,10,0.3),circle(10,0,0.3),graph(300,300,-15,15,-15,15,y=-x+10))}}}
Now the inequality
x+y<10
y<-x+10
since y is less than something shade the portion below the line
{{{drawing(300,300,-15,15,-15,15,circle(0,10,0.3),circle(10,0,0.3),graph(300,300,-15,15,-15,15,y<-x+10))}}}

m.ananth@hotmail.ca