| A | B |
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| Powers of Products | An expression of the form am • an. It can be found by adding the exponents when multiplying powers that have the same base |
| Prime Number | Any natural number with exactly two factors, 1 and itself |
| Probability | A number from 0 to 1 (or 0% to 100%) that indicates how likely an event is to happen. |
| Probability of a Compound or Combined) Event | There are two types: 1. The union of two events A and B, which is the probability of A or B occurring. 2. The intersection of two events A and B, which is the probability of A and B occurring. |
| Quadrants | The four regions of a coordinate plane that are separated by the x-axis and the y-axis, |
| Quadratic Equation | An equation that can be written in the standard form ax2 + bx + c = 0, where a, b, and c are real numbers and a does not equal zero. |
| Quadratic Formula | The solutions or roots of a quadratic equation in the form ax2 + bx + c = 0, where a ≠ 0. |
| Quadratic Function | A function that can be expressed in the form f(x) = ax2 + bx + c, where a ≠ 0 and the highest power of the variable is 2. |
| Quartile | One of three values that divides a set of data into four equal parts: 1. Median divides a set of data into two equal parts.2. Lower quartile (25th percentile) is the median of the lower half of the data. 3. Upper quartile (75th percentile) is the median of the upper half of the data. |
| Radical Expression | An expression containing a radical symbol ( n a ). |
| Range (of a Relation or Function) | The set of all possible values for the output (dependent variable) of a function or relation; the set of second numbers in the ordered pairs of a function or relation; the values of the y-coordinates in (x, y). |
| Range (of Data) | In statistics, a measure of dispersion that is the difference between the greatest value (maximum value) and the least value (minimum value) in a set of data. |
| Rate | A ratio that compares two quantities having different units |
| Rate (of Change) | The amount a quantity changes over time |
| Rate (of Interest) | The percent by which a monetary account accrues interest. |
| Ratio | A comparison of two numbers, quantities or expressions by division. It is often written as a fraction, but not always |
| Rational Expression | An expression that can be written as a polynomial divided by a polynomial, defined only when the latter is not equal to zero. |
| Rational Number | Any number that can be written in the form a/b where a is any integer and b is any integer except zero. |
| Real Number | The combined set of rational and irrational numbers. All numbers on the number line. Not an imaginary number. |
| Regression Curve | The line or curve of best fit that represents the least deviation from the points in a scatter plot of data. |
| Relation | A set of pairs of values (e.g., {(1, 2), (2, 3) (3, 2)}). The first value in each pair is the input (independent value), and the second value in the pair is the output (dependent value). |
| Repeating Decimal | A decimal with one or more digits that repeats endlessly |
| Rise | The vertical (up and down) change or difference between any two points on a line on a coordinate plane |
| Run | The horizontal (left and right) change or difference between any two points on a line on a coordinate plane. |
