linear equation	an equation that describes a straight line
point-slope formula	a form of linear equation, written as, where m is the slope and (x₁, y₁) are the co-ordinates of a point
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
slope-intercept formula	a linear equation, written as y = mx + b, where m is the slope and b is the y-intercept
standard form of a linear equation	a linear equation, written in the form Ax + By = C, where x and y are variables and A, B, and C are integers