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LINES (free version available here)

- Finds the equation of a line, given any of the following pieces of information: slope and y-intercept, slope and point, 2 points, x-intercept and y-intercept, point and slope of parallel line, point and slope of perpendicular line.
- Changes the equation of a line from slope-intercept form to standard form or the reverse.

Useful for:

- SAT
- ACT
- Algebra 1
- Algebra 2
- Geometry
- Calculus