At (x,y)=(0,-1)
-10x + 4y = -10(0) + 4(-1) = -4
Does that make the statement true? Is -4 ≥ -4? It's equal, so yes.
Answer: YES
we can plug point (0,-1) into equality
[tex] -10x+4y \geq -4 [/tex]
we can plug
x=0 and y=-1
and we get
[tex] -10*0+4*-1 \geq -4 [/tex]
[tex] 0-4 \geq -4 [/tex]
[tex] -4 \geq -4 [/tex]
we know that
-4 is equal to -4
so, it satisfies the inequality........Answer
