Algebra 1 Lesson 2 Flashcards

Key Terms in Algebra 1

• Commission: A fee for services, typically calculated as a percentage of the total cost.

• Contradiction: In mathematics, a statement that opposes an assumption, such as assuming a variable is negative and subsequently stating it equals a positive product.

• Conversion Factor: A numerical multiplier or divisor used for changing quantities from one unit system to another.

• Corresponding Angles: Angles located at the same position in two different intersections created by a transversal crossing parallel lines.

• Corresponding Sides: Sides in two figures that occupy the same relative position.

• Cross Products: Equal products achieved by multiplying opposite terms in a proportion, demonstrating equality of two ratios.

• Discount: A percentage deducted from a price; for example, a 10% discount on a $30 item results in a $3 reduction.

• Equation: A mathematical expression stating that two quantities are equal, represented on either side of an equals sign.

• Formula: A mathematical expression using symbols to describe the relationship between variables; for instance, the volume of a box is calculated as V = h × w × l.

• Identity: An equality that holds true regardless of the values substituted in; examples include algebraic identities like (x + y)² = x² + 2xy + y².

• Indirect Measurement: A method to determine a value using proportions when direct measurement is unfeasible.

• Interest: The cost associated with a loan or investment, representing the price paid for borrowed money.

• Literal Equation: An equation that expresses known quantities using letters, as opposed to numerical equations.

• Markup: The process of determining the increase in value or price, refocusing on the absolute change and its percentage related to the original amount.

• Percent: Refers to parts per hundred, often used to express ratios or comparisons.

• Percent Change: A measure of how much a quantity increases or decreases in relation to its previous value.

• Percent Decrease: A specific measure of how much a quantity loses in value, expressed as a percentage.

• Percent Increase: A specific measure of how much a value gains relative to its original amount, also expressed as a percentage.