**Title:** Graphing Lines

**Description:**
Students explore the world of lines by investigating the relationships between linear equations, slope, and graphs of lines. This interactive tool requires Javascript.

**Standard(s): **

[MA2013] (7) 2: Recognize and represent proportional relationships between quantities. [7-RP2]

[MA2013] (8) 10: Analyze and solve pairs of simultaneous linear equations. [8-EE8]

[MA2013] AL1 (9-12) 17: Solve linear equations and inequalities in one variable, including equations with coefficients represented by letters. [A-REI3]

[MA2013] GEO (9-12) 31: Prove the slope criteria for parallel and perpendicular lines, and use them to solve geometric problems (e.g., find the equation of a line parallel or perpendicular to a given line that passes through a given point). [G-GPE5]