| A | B |
|---|
| boundary line | the line on a coordinate graph that divides the numbers that will work in a linear inequality from the numbers that won't work |
| constant of proportionality | the ratio that determines direct variation |
| direct variation | two variable quantities are related proportionally by a constant positive ratio |
| linear equation | an equation whose solutions fall on a line on the coordinate plane |
| y-intercept | the value where the line crosses the y axis |
| point-slope form | y1-y2 = m(x1-x2) |
| slope-intercept form | y=mx + b |
| x-intercept | the value where the line crosses the x-axis |
| linear inequality | when you replace the = sign with an inequality sign to show that there are more than one correct answer |
