coordinates	a pair of numbers that identifies a point on the coordinate plane—the first number is the x-value and the second is the y-value
rise	vertical change between two points
run	horizontal change between two points
slope	the ratio of the vertical and horizontal changes between two points on a surface or a line
slope formula	the equation for the slope of a line, written as , where m is the slope and (x₁, y₁) and (x₂, y₂) are the coordinates of two points on the line