If x > y and z < 0, then –xz _______ –yz.
If $x>y$ and $z<0$
Now, multiplying by $z$, we get
$x z Now, multiplying inequality by $-1$ We get $-x z \geq-y z$
Now, multiplying inequality by $-1$
We get
$-x z \geq-y z$
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