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Homework Statement
show that if x and y are real numbers such that x<y, then for any real number k<0, kx>ky
Homework Equations
The Attempt at a Solution
note- this is not a homework. im just teaching myself some algebra, so please help
I learned it in elementary school, about 50 years ago.And where do you pull your "rule of signs" from?
It is a higher-order statement that the one to be proven.