Mathematics Algebra Help

1. Power Point PresentationPower Point Presentation
By: GOODWILL KHOABy: GOODWILL KHOA

2. BASIC ALGEBRABASIC ALGEBRA
 aa × b × c = abc× b × c = abc
 a + a = 2aa + a = 2a
 a² × a² = a² + ² = a^4a² × a² = a² + ² = a^4
 a/b + b/a = 1a/b + b/a = 1
 Remember when youRemember when you
multiply any indicesmultiply any indices
you always add theyou always add the
powers.powers.
 Any fraction multipliedAny fraction multiplied
by its reciprocal is equalby its reciprocal is equal
to 1to 1

3. Algebraic EquationsAlgebraic Equations
 We use algebraic equation to replace normalWe use algebraic equation to replace normal
numbers especially if a number is unknownnumbers especially if a number is unknown
e.g. 2 +e.g. 2 + xx = 6= 6
TheThe xx is the unknown number and therefore it isis the unknown number and therefore it is
represented by a letter.represented by a letter.

4. EQUATIONSEQUATIONS
Y = mx + bY = mx + b
ax + by = cax + by = c
E = mcE = mc²²

5. Shapes on the Cartesian planeShapes on the Cartesian plane
y
x
-y
-x

6. Example 1Example 1
SentenceSentence Algebraic EquationAlgebraic Equation
A number increased by nine is fifteen.A number increased by nine is fifteen. y + 9 = 15y + 9 = 15
Twice a number is eighteen.Twice a number is eighteen. 2n = 182n = 18
Four less than a number is twenty.Four less than a number is twenty. x - 4 = 20x - 4 = 20
A number divided by six is eight.A number divided by six is eight. = 8= 8
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6

7. SummarySummary
 We use algebraic equations in more then oneWe use algebraic equations in more then one
situation.situation.
 We use them to replace a unknown numberWe use them to replace a unknown number
 We can use them on graphs and to solveWe can use them on graphs and to solve
graphsgraphs
 Algebra is Easy as 1 2 3Algebra is Easy as 1 2 3