Chpt 5 Flashcards
1
Q
Define variable
A
A symbol used to represent an unknown number.
2
Q
Define algebra
A
The branch of mathematics that uses variables to explain patterns and solve problems
3
Q
Define expression
A
A variable or combination of variables, numbers and symbols that represents a mathematical relationship.
4
Q
Define equation
A
A statement that says two expressions are equal
5
Q
Define substitution
A
Replacing the variable in an algebraic expression with a numeral
6
Q
How to write an algebraic expression
A
- identify the pattern
- define the variable
- Write the expression
7
Q
The left side must be ______ to tge right
A
Equal
8
Q
When isolating the variable, it is important to….
A
Preserve equality
9
Q
When solving an algebraic expression with both multiplication and addition, always _______ first
A
Subtract
