Advanced Algebra Trigonometry

Objective: SWBAT solve linear equations (Day 2)

Solve for the variable.

1689

2x

Additional Vocabulary

Identity: an equation that is satisfied by every number

Conditional Equation: an equation that is satisfied by some numbers but not others

Contradiction: an equation that has no solution and the solution set is an empty set or null set. {0}.

3

Identify the Type of Equation.

4

Decide whether each equation is an identity, a conditional equation, or a contradiction. Give the solution set.

a. -2(x + 4) + 3x = x – 8 b. 5x – 4 = 11 c. 3(3x-1) = 9x +7

Try this:

For each of the following equations, find the solution. Then classify the equation as an Identity, Conditional or Contradiction.

1. x = (2 + 2x) – x

2. (x-2) + (2x + 4) = x

3. x + 2 = x + 3

4. 2x = 3x

5. 2x – 4 + 3x = 8x - 5

Solve for the variable.

xxx 72425

Solve for the variable.

10

32

5

1

3

2 xx

Solve for the variable.

3v – 9 – 4v = –(5 + v)

Homework.

9

Page 440 – Appendix A# 2-22 evens

• Page 440 – Appendix A

• # 1-21 odds

Homework