Term | Definition |
Opposite | The additive inverse of any number a is -a. |
Additive Inverse | The opposite of any number a is -a. |
Reciprocal | The multiplicative inverse of any nonzero number a is 1/a. |
Multiplicative Inverse | The reciprocal of any nonzero number a is 1/a. |
Absolute Value | The distance from zero on the number line. |
Variable | A symbol, usually a letter, that represents one of more numbers. |
Expression | Combination of one or more variables. |
Evaluate | Substitute numbers for variables in an expression and follow the order of operations. |
Term | A number, variable, or the product of a number and one or more variables. |
Coefficient | The numerical factor in a term. |
Solution of an equation | A number that makes an equation true. |
Compound Inequality | A pair of inequalities joined by "and" or "or". |
Relation | A set of pairs of input and output values. |
Domain | The set of all inputs, or x-coordinates of ordered pairs. |
Range | The set of all outputs, or y-coordinates of ordered pairs. |
Mapping Diagram | Links the elements of the domain with corresponding elements of the range. |
Function | A relation in which each element of the domain is paired with exactly one element in the range. |
Linear Function | A function whose graph is a line. |
Dependent Variable | y variable |
Independent Variable | x variable |
y-intercept | Point at which the line crosses the y-axis. |
x-intercept | Point at which the line crosses the x-axis. |
Standard form of a linear equation | Ax + By = C |
Slope | The ratio of the vertical change to a corresponding horizontal change. Rise over run. |
Point-slope form | y – y1 = m(x – x1) |
Slope-intercept form | y = mx + b |