1­2 and 1­3 A2.notebook
August 19, 2011
Kudos
HW Quiz # 1
Each question is either right or wrong
1. Name the property demonstrated below
a(b +c) = ab +ac
2. True or False. If false, give a
counterexample.
The reciprocal of each whole number is a
whole number.
Know-vocabulary on next page.
Understand-how to convert from an
expression using words to an algebraic
expression.Understand how to solve an
equation by isolating the variable.
Do- be able to simplify and evalute algebraic
expressions.Identify parts of an equation or
expression. Isolate the variable and solve
various equations and formulas.
Aug 18­10:33 AM
Aug 18­10:47 AM
Evaluating and Simplifying Algebraic Expressions
Section 1.2
Warm up
Vocabulary
1. Variable:
Algebraic Expression:
Variable Expression:
Evaluate:
Term:
Coefficient:
2. Make a grid and graph.
a) y = 4x ­(­6) b) Aug 24­7:58 AM
a-2b+ab
Identify: variables
terms
a=3
Aug 24­8:54 AM
b=-1
-x2-2(x+1) x=3
-x2+4(x2+2) x=-5
Expression
Coefficients
Evaluate:
Aug 24­8:55 AM
Aug 24­8:56 AM
1
1­2 and 1­3 A2.notebook
August 19, 2011
Perimeter
Perimeter
Write and simplify an algebraic expression for the perimeter of this shape. What type of shape is it?
3x
Write and simplify an algebraic expression for the perimeter of this shape. What type of shape is it?
3c
2x­y
2x
y
2c
y
2c
d
3x­y
d
Algebra II
Section 1.3
Solving given equations
Solving for indicated variables
3c­d
3
6c­2d
3
Solve for c if d = ­2.
Aug 24­8:57 AM
d
Aug 24­8:57 AM
Solve for the indicated variable
A. y=mx+b for x
2
2
B. a +b =c
2
In g
rou
ps!
for b
Solve the equation:
A. 13y + 48 = 8y ­ 47
B. 3x ­ 7(2x ­ 13) = 3(­2x + 9)
C. 2a-3b=4x for a
5
Aug 25­9:08 AM
D. 1 a(x2-4m)=by for m
2
Aug 24­8:16 AM
Homework 1.2/1.3
Pg. 15-17: 5-8,33-43
Pg. 21-22: 13-22
Aug 25­9:16 AM
2