u only reverse the sign when u multiply or divide by a NEGATIVE number...otherwise u don't change the direction
The inequality symbol.
The inequality symbol for less than or equal to: ≤
negative flip
my dad
Always.
Because your multiping the inverse to both sides
u only reverse the sign when u multiply or divide by a NEGATIVE number...otherwise u don't change the direction
You need to reverse the inequality symbol when multiplying both sides of an inequality by a negative number because you are changing the sign of both sides of the equation. Since inequality, such as "less than", means "to the left of" on the number line (where left is minus and right is plus) then a number that is less than another will be greater than the other if the signs were reversed. Example: 3 is less than 4, but -3 is greater than -4.
Flip. You need to reverse the inequality when multiplying or dividing by a negative. -2x < 10 (-1)*(-2x) < (-1)*10 2x > -10 x > -5
The inequality symbol.
The usual case is when you multiply or divide an inequality by a negative number.
When you divide both sides by a negative value
The inequality symbol doesn't change direction in this case.Note that that is the same as adding a positive number.Note also that if you MULTIPLY or DIVIDE by a negative number, then you need to change the direction of the inequality symbol.
No you do not.
The inequality symbol for less than or equal to: ≤
When solving an inequality, you must revers the inequality sign when you multiply (or divide) both sides by a negative number.