1. 1.3 Solving Equations 1.5 Solving Inequalities
Algebra II w/ trig

2. Equations: a statement that states two expressions are equal
Variable: a symbol that represents many different numbers in a set of numbers (an unknown)
Literal equation: an equation that contains two or more variables.

3. A. Write an algebraic expression to represent each verbal expression.
1. 3 more than a number
2. six times the cube of a number
3. the square of a number decreased by the product of 5 and the number
4. twice the difference of a number and 6

4. B. Write a verbal sentence to represent each equation.
= 23
2. 7y – 2 = 19 3.

5. C. Properties of Equality/Property of Inequalities:
Whatever you do to one side of an equation, you MUST do to the other side.

6. Steps for solving equation/inequality:
Simplifying either side of an equation.
Add/subtract each side of an equation.
Multiply/divide each side of an equation.
Check your solution/ Graph answer for inequality.

7. Inequalities: Graphing
Less than < open circle
Greater than > open circle
Less than or equal to ≤ closed circle
Greater than or equal to ≥ closed circle
Not equal to ≠ open circle on the number

8. D. Solve 1. 2.

10. , solve for h

11. E. Solve and Graph 1. y 2.

12. 3.