Let's start with the first one, $x+y \leq 1$. To do this, we first draw the line $x+y = 1$. We find two points on this line by setting $x=0$, which gives $y=1$, and setting $y=0$, which gives $x=1$. So, we have the points $(0,1)$ and $(1,0)$. We can now draw a
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