| A | B |
|---|
| boundary line | line that separates two sets |
| direction variation | a number y varies directly with a number x if y is a constant multiple of x |
| half-planes | in a plan, the region on either side of a line |
| least squares line | the line whose squares of deviations from data set points are least |
| line of best fit | a line whose equation is determined by the metod ofleast squares and represents a linear relationship between data values |
| linear combination | an expression of the fom Ax + By, where A and B are fixed numbers |
| linear inequalities | inequalities of the form Ax + By < C where A, B and C are constants |
| linear regression | the fitting of a straight line through a given set of poins according to specific criteria, such as least squares |
| oblique | a line that is neither horizontal nor vertical |
| point-slope form | an equation of a line in the form y - k = m (x- h) where m is the slope and (h,k) is a point on the line |
| rate unit | the unit of a rate |
| slope | the rate of change between points on a line |
| slope-intercept form | an equation of a line in the form y = mx + b, where m is the slope and b is the y-intercept |
| standard form of an equation | an equation in the form Ax + By = C, where A, B, and C are constants |
| x-intercept | the x-coordinate of apoint where a graph intersects the x-axis |
| y-intercept | the x-coordinate of apoint where a graph intersects the y-axis |
