C784 MODULE 3 BASIC ALGEBRA- VOCABULARY |32 QUESTIONS AND ANSWERS

constant A value that is known and unchanging. y-intercept The y-value of the point at which a line intersects with the y-axis. distributive property A mathematical principle used to multiply one term by multiple terms. This principle is employed when there are parentheses around multiple terms, which are in turn multiplied by a single term. quadrants The four sections of the coordinate plane, separated and defined by the x-axis and y-axis. the substitution method When a variable is substituted by its known value in an algebraic expression or equation. slope The value that describes the direction and steepness of a line drawn on the coordinate plane. It is measured by 'rise over run.' Rise/Run = (the change in y value) / (the change in x value) = (y2 - y1)/(x2 -x1) arithmetic expression A string of numbers connected by elementary operations. coefficients A number by which a variable is multiplied. This number is written in front of the variable(s). algebraic equation Any equation that contains variables, constants, or mathematical operations. elementary operation Addition, subtraction, multiplication, and division. y-axis The vertical line that passes through the origin on a coordinate plane. equation Two mathematical expressions separated by the equals sign, =. The two expressions on either side of the equals sign hold the same value as one another. origin The point (0,0) on a coordinate plane, which is where the x-axis and y-axis intersect. the principle of equality If you perform equivalent operations to both side of an equation, the result will always be an equivalent equation. algebraic expression A string of terms that are connected by division, addition, and subtraction operations. variable A symbol that represents a mathematical value. value A number or numerical worth. degree The largest exponent in an expression. like terms They that have the same variable(s) with the same exponent(s). These terms can be 'combined' using addition or subtraction. ordered pairs Two numbers written in the form (x, y), where x represent the x-value or x-coordinate, and y represents the y-value or y-coordinate. horizontal line A line that runs left to right on the coordinate plane, parallel to the x-axis. It has no 'rise' or change in y-value. x-axis The horizontal line that passes through the origin on a coordinate plane. term An individual number, a variable, or numbers and variables multiplied together. They are separated by addition, +, or subtraction, -, in an expression. slope-intercept form A common format that a linear equation can take that is helpful for graphing purposes. It is of the form y = mx + b, where m is the slope of the line and b is the y-intercept. vertical line A line that runs up and down on the coordinate plane, parallel to the y-axis. It has no 'run' or change in x-value. inverse operations Two operations that undo one another. Order of Operations A set of rules that defines the order in which mathematical operations should be performed. cubic An expression or equation of degree 3. quadratic An expression or equation of degree 2. exponent Sometimes called a power, it is a quantity that represents repeated multiplication. unlike terms They that do not have the same variable(s) with the same exponent(s). These terms can not be combined using addition or subtraction. linear An expression or equation of degree 1. Add or Remove Terms