# data[].attributes.attachment_link.description
Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

# data[].attributes.headline
MathisFun: Parallel & Perpendicular Lines

# data[].attributes.subject
MathisFun: Parallel & Perpendicular Lines

# data[].attributes.attachment_link.title
Finding Parallel and Perpendicular Lines

# data[].attributes.attachment_link.description
Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

# data[].attributes.attachment_link.description
The equation of a straight line is usually written this way:

# data[].attributes.headline
Purple Math: Parallel & Perpendicular Lines

# data[].attributes.subject
Purple Math: Parallel & Perpendicular Lines

# data[].attributes.headline
Purple Math: Standard to Slope-Intercept

# data[].attributes.subject
Purple Math: Standard to Slope-Intercept

# data[].attributes.headline
Purple Math: Graphing Linear Inequalities

# data[].attributes.subject
Purple Math: Graphing Linear Inequalities

# data[].attributes.attachment_link.title
The Slope of a Straight Line | Purplemath

# data[].attributes.attachment_link.description
Explains the slope concept, demonstrates how to use the slope formula, points out the connection between slopes of straight lines and the graphs of those lines.