sirs1010 sirs1010

06-03-2017
Mathematics

contestada

What happens when an inequality expression is divided by the same number. Does the sign stay the same each time or change directions? If the sign changes, explain what made the direction of the sign change. Describe a rule for this.

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winterbeaver winterbeaver

06-03-2017

The sign only changes when divided or multiplied by a negative number.

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kaycous kaycous

06-03-2017

divided by a positive number, not change

divided by a negative number, change sign

Example

10 > 5

divided by 5, no change in sign: 2 >1

but divided by -5, change sign: -2 < -1

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