Question | Answer |
Coordinate Plane | A plane formed by two real number lines that intersect at a right angle. |
Ordered Pair | A pair of numbers used to identify a point in a plane. |
X-coordinate | The first number in a ordered pair. |
Y-coordinate | The second number in a ordered pair. |
X-axis | The horizontal axis in a coordinate plane. |
Y-axis | The vertical axis in a coordinate plane. |
Origin | The point (0,0) in a coordinate plane at which horizontal axis intersects the vertical axis. |
Quadrants | One of four parts into which the axes divide a coordinate plane. |
Graph of an ordered pair | The point in the plane that corresponds to an ordered pair (x,y) |
Scatter plot | A graph of pairs of numbers that represent real-life situations. It is a way to analyze the relationship between two quantities. |
Solution of an equation | A number that, when substituted for the variable in an equation, results in a true statement. |
Graph of an equation | The set of all points (x,y) that are solutions of the equation. |
X-intercept | The x-coordinate of a point where a graph crrosses the x-axis. |
Y-intercept | The y-coordinate of a point where a graph crosses the y-axis. |
Slope | The number of units a nonvertical line rises or falls for each unit of horizontal change from left to right. |
Rate of change | A comparison of two different quantities that are changing. |
Constant variation | The constant in variation model. |
Direct variation | The relationship of two variables x and y if there is a nonzero number. |
Slope-intercept form | An expression that has no perfect square factor other than 1 in the radicand, no fractions in the radicand, and no radicals appearing in the denominator of a fraction. |
Parallel Lines | Two different lines in the same plane that do not intersect. |
Relation | Any set of ordered pairs (x,y) |
Function Notation | A way to name a function that is defined by an equation. |
Graph of a function | The set of all points (x,f,(x), where x is in the domain of the function. |