Mathematics: What s the purpose of flipping the inequality sign when multiplying or dividing by a negative number?

What s the purpose of flipping the inequality

Ответ:

chloeholt123

12.03.2022

The negative sign will change the value of the number.

1<2
if we divide by -1
-1<-2
this is false because the values have changed, therefore you have to always flip the sign

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Ответ:

emilyf05

15.03.2022

Mathematics

y = -4x - 1

It is a linear function different from the constant function. Therefore, if the range is only one number, then the domain is only one number too.

Let's calculate it:

y = -25 → -4x - 1 = -25 |add 1 to both sides

-4x = -24 |divide both sides by (-4)

x = 6

The domain = {6}.

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What's the purpose of flipping the inequality sign when multiplying or dividing by a negative number?

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