With math

1. provide a counterexample for the statement in parentheses. (1 point)“if a figure has four sides, then it is a square”

2. identify the hypothesis of the statement in parentheses. (1 point)“if two angles form a linear pair, then they are adjacent and supplementary.”

3. identify the conclusion of the statement in parentheses. (1 point)“if two angles form a linear pair, then they are adjacent and supplementary.

4. write the statement in parentheses as a biconditional. (1 point)“if two angles form a linear pair, then they are adjacent and supplementary.”

5. is the statement in parentheses a good definition? explain. (2 points)“obtuse angles are fairly large.”

AlgebraIntroduction to Algebra
Variables 
Expressions 
Equations 
Solution of an equation 
Simplifying equations 
Combining like terms 
Simplifying with addition and subtraction 
Simplifying by multiplication 
Simplifying by division 
Word problems as equations 
Sequences VariablesA variable is a symbol that represents a number. Usually we use letters such as n, t, or x for variables. For example, we might say that s stands for the side-length of a square. We now treat s as if it were a number we could use. The perimeter of the square is given by 4 × s. The area of the square is given by s× s. When working with variables, it can be helpful to use a letter that will remind you of what the variable stands for: let n be the number of people in a movie theater; let t be the time it takes to travel somewhere; let d be the distance from my house to the park. ExpressionsAn expression is a mathematical statement that may use numbers, variables, or both.Example:The following are examples of expressions:2x3 + 72 × y + 52 + 6 × (4 - 2)z + 3 × (8 - z)

Sin(a)+cos(a)+cot(a)-1=2(csc(x)+1)