Algebra 1 Terms Flashcards

Key Algebra 1 Terms

• Variable: A symbol (e.g., x or y) representing a variable quantity in mathematical expressions.

• Algebraic Expression: Involves at least one variable, could include numbers and operation symbols.

• Exponent: Indicates how many times a quantity is multiplied by itself.

• Natural Numbers: The set {1, 2, 3, 4, ...}, also known as counting numbers.

• Whole Numbers: Includes all natural numbers plus zero; the set {0, 1, 2, 3, ...}.

• Integers: Comprises all whole numbers, including positive, negative, and zero.

• Rational Numbers: Numbers expressible as fractions, includes terminating/repeating decimals and integers.

• Irrational Numbers: Cannot be represented as a ratio of two integers; their decimal forms are nonending and nonrepeating.

• Inequality: Compares two quantities using symbols such as <, ≤, ≥, or ≠.

• Absolute Value: Represents the distance of a number from zero on the number line.

• Coordinate Plane: Divided into four quadrants by the x-axis (horizontal) and y-axis (vertical).

• Ordered Pair: A pair of numbers (x, y) used to locate a point in a coordinate plane.

• Midpoint: The point exactly halfway between two endpoints of a segment.

• Domain: The set of possible values for the independent variable in a function.

• Range: Represents the possible outputs or values a function can take.

• Dependent Value: The value of y in a function, which varies based on x.

• Independent Value: The value of x in a function, which determines y.

• Scatter Plot: A graph representing points to show potential relationships between two data sets.

• Positive Correlation: Indicates that an increase in one variable leads to an increase in another variable.

• Negative Correlation: Shows that an increase in one variable is associated with a decrease in another.

• Trend Line: A line that approximates the relationship between data sets in a scatter plot.

• Mean: The average value computed by adding a set of numbers and dividing by the count.

• Median: The middle value in a data set, with half of the values above and below it.

• Mode: The most frequently occurring number in a data set.

• Stem and Leaf Plot: A data representation method that organizes numbers by their place values, separating stems from leaves.

• Additive Inverse: A number that, when added to its pair, results in zero.

• Reciprocal: A number that, when multiplied with its pair, yields one (e.g., the reciprocal of 2/3 is 3/2).

• Coefficient: The numerical factor accompanying a variable in a term.

• Probability: The chance or likelihood of a specific event occurring.

• Theoretical Probability: The ratio of the number of favorable outcomes to the total number of outcomes based on mathematical reasoning.

• Odds: Ratio of the number of ways an event can occur versus the number of ways it cannot.

• Literal Equation: An equation that includes two or more variables.

• Ratio: A comparative relationship between two numbers expressed as a division (a/b).

• Proportion: An equality stating that two ratios are equivalent.

• Dilation: A transformation that changes an object's size while maintaining its shape.

• Scale Factor: The ratio used to enlarge or reduce similar figures.

• Consecutive Integers: A sequence of integers that differ by one.

• Greatest Possible Error: One-half of the unit of measurement for any given measurement.

Test your knowledge of key algebraic terms with these flashcards. Each card provides a definition for important concepts such as variables and algebraic expressions. Perfect for Algebra 1 students looking to reinforce their understanding.