The horizontal axis on a coordinate plane

The constant k in direct and inverse variation equations

The point where the x-axis and y-axis intersect on the coordinate plane

The vertical axis on the coordinate plane

The x and y axes divide the coordinate plane into four regions

A linear relationship between two variables, x and y, that can be written in the form y=kx

A measure of the steepness of a line on a graph

A ratio that compares the amount of change in the dependent variable to the amount of change in the independent variable

A plane formed by the intersection of a horizontal and vertical number line

A pair of numbers that can be used to locate a point on the coordinate plane