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Module 8- Equations And Inequalities A4 ARAKZA

Published on Nov 18, 2015

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PRESENTATION OUTLINE

EQUATIONS AND INEQUALITIES

MODUEL 8
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WHAT IS A EQUATION?

a statement that the values of two mathematical expressions are equal (indicated by the sign)

WHAT ARE INEQUALITIES?

inequalities are equations that, instead of saying what x equals, it sorta tells us what x cannot equal.

WHAT ARE VARIABLES?

A symbol for a number we don't know yet. It is usually a letter like x or y.

ONE STEP EQUATION

YOU HAVE TO CHOOSE AN OPERATION

WHAT ARE SOME STPES TO SOLVE A INEQUALITY

Simplify using the inverse of addition or subtraction.

SOLVING AN EQUATION

FIRST YOU HAVE TO CHOOSE A VARIABLE THAN AN OPERATION
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HOW TO SOLVE A EQUATION

FIRST YOU HAVE TO CHOOSE A VARIABLE THEN YOU HAVE CHOOSE A OPERATION

HOW ARE INEQUALITIES THE SAME AS OR DIFFERENT FROM EQUATIONS

HOW THEY ARE DIFFERENT IS THAT A EQUATION USES A VARIABLE AND A INEQUALITY USES NUMBER LINE.

HOW DO YOU GRAPH INEQUALITIES USING DIFFERENT SYMBOLS

REARRANGE THE EQUATION SO "Y" IS ON THE LEFT AND EVERYTHING ELSE ON THE RIGHT. PLOT THE "Y=" LINE (MAKE IT A SOLID LINE FOR Y≤ OR Y≥, AND A DASHED LINE FOR Y) SHADE ABOVE THE LINE FOR A "GREATER THAN" (Y> OR Y≥) OR BELOW THE LINE FOR A "LESS THAN" (Y