1. Ch. 3 Solving Linear Equations
Objective 4
Solve problems that can be represented as equations

2. Introduction… What is a Triangle? (sides, angles, degrees)
What are the different types of Triangles?
set; finite; infinite

3. Triangles - sides

4. Triangles - angles

5. Vocabulary
_Triangle_ = The plane figure formed by connecting three points not in a straight line by straight line segments.
- has three sides
- has 3 angles (always add up to 1800)
set; finite; infinite

6.  Word Problem 
If two angles of a triangle add up to 1300, what is the measure of the third angle? x = 180

7.  Word Problem 
A triangle has two angles with the measure of 150 and 900. What is the measure of the third angle? x = 180

8.  Word Problem 
An obtuse triangle is also isosceles. If the obtuse angle measure 1200, what is the measure of the two other angles? x = 1800

9. Writing and Solving Number Theory Sentences…
Set of integers {… -2, -1, 0, 1, 2, 3, …}
If n represents one of these integers, how would you express the next sequential integer?
n + 1

10. Writing and Solving Number Theory Sentences…
If n represents an integer, what is an expression for any even integer? 2n If n represents an integer, what is an expression for any odd integer? 2n + 1

11. Writing and Solving Number Theory Sentences…
Write the set of four consecutive integers if the first one is n. n, n+1, n+2, n+3

12. Writing and Solving Number Theory Sentences…
How would you write the set of three consecutive even integers if n is even?
n, n+2, n+4
How would you write the set of three consecutive odd integers if n is odd?
n, n+2, n+4,

13.  Word Problem 
Find three consecutive integers whose sum is 27. n + (n+1) + (n+2) = 27

14.  Word Problem 
Find four consecutive odd integers whose sum is -8. n + (n+2) + (n+4) + (n+6) = -8

15.  Word Problem 
The sum of twice a number and 32 is 78. What is that number? 2x + 32 = 78

16.  Word Problem 
Find a number whose product with 9 is the same as its sum with 56. 9n = n + 56

17.  Word Problem 
Two odd integers differ by 4 and their sum is 226. What are the integers? n + (n + 4) = 226

18. Homework
Pages (odds)