solving inequalities. what are inequations? statements showing inequalities one quantity or...
TRANSCRIPT
Solving InequalitiesSolving InequalitiesSolving InequalitiesSolving Inequalities
What are Inequations?
• Statements showing inequalities• One quantity or expression is not
equal to another
Manipulating Inequations
-3 < 4Add 5 to each side
-3 + 5 < 4 + 52 < 9
It’s still true!
Manipulating Inequations…
-3 < 4Multiply each side by 5
-3 x 5 < 4 x 5-15 < 20
True again!
Manipulating Inequations…
-3 < 4Multiply each side by -5
-3 x -5 < 4 x -515 < -20
Uh oh…
Rule:
If we multiply or divide each side of an inequation by the same
NEGATIVE number, we must REVERSE the inequality sign
Let’s do an example…12 – x < -6 + 2x