Algebra Vocab Exam Chapters 1-6
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50 terms
Terms | Definitions |
|---|---|
 variable | a symbol used to represent a quantity that can change |
| constant | a value that does not change |
| algebraic expression | an expression that contains at least one variable |
| numerical expression | a mathematical phrase that contains operations and numbers |
| opposites | numbers that are the same distance from zero on opposite sides of the number line |
| absolute value | the distance from zero on a number line |
| multiplicative inverse | the reciprocal of a number |
| repeating decimal | a rational number in decimal form that has a block of one or more digits that repeats continuously |
| coefficient | a number multiplied by a variable. |
| like terms | terms with the same variables raised to the same exponents. |
| order of operations | a rule for evaluating expressions: Parentheses, exponents, multiplication and division, addition and subtraction |
| terminating decimals | a rational number in decimal form that has a finite number of digits after the decimal point |
| origin | the intersection of the x and y axes in a coordinate plane |
| y axis | the vertical axis in a coordinate plane |
| x axis | the horizontal axis in a coordinate plane |
| axes | two perpendicular number lines, also know as the x axis and the y axis, used to define the location of a point in a coordinate plane |
| ordered pair | a pair of numbers that can be used to locate a point on a coordinate plane |
| y coordinate | the second number in an ordered pair |
| x coordinate | the first number in an ordered pair |
| output | the result of substituting a value for a variable in a function |
| input | a value that is substituted for the independent variable in a relation or function |
| quadrant | one of the four regions into which the x and y axis divide the coordinate plane |
| coordinate plane | a plane that is divided into four regions |
| equation | a mathematical sentence that shows that two expressions are equivalent |
| identity | an equation that is true for all values of the variables |
| solution of the equation | a value that makes the equation true |
| contradiction | an equation that is not true for any value of the variable |
| domain | the set of input values of a function |
| range | the set of output values of a function |
| discrete graph | a graph made up of unconnected points |
| continuous graph | a graph made up of connected curves or lines |
| dependent variable | a variable whose value depends on the value of the input, also known as the output |
| independent variable | a variable whose value determines the value of the output, also known as the input |
| function | a type of relation that pairs each element in the domain with exactly one element in the range |
| no correlation | no relationship between the sets of values |
| scatter plot | a graph with point plotted to show a possible relationship between two sets of data |
| negative correlation | one set of data values increases as the other set decreases |
| positive correlation | both sets of data values increase |
| x intercept | the x coordinate of the point where the graph intersects the x axis |
| linear function | a function whose graph forms a straight line |
| slope | the measure of the steepness of a line |
| y intercept | the y coordinate of the point where a graph intersects the y axis |
| direct variation | a relationship between two variables, x and y, that can be written in the form y=kx |
| perpendicular lines | lines that intersect at 90 degree angles |
| parallel lines | lines in the same planes that do not intersect |
| rotation | a turn |
| reflection | a flip |
| family of functions | a set of functions who graphs have basic characteristics in common |
| parent function | the most basic function of a family of functions, or the original function before a transformation is applied |
| translation | a slide |
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