# Determine if Two Lines Are Parallel, Perpendicular or Neither Given Two Points (Neither)

This video explains how to determine if two lines are parallel, perpendicular, or neither given two points on each line.

# Determine if Two Lines Are Parallel, Perpendicular or Neither Given Two Points (Perpendicular)

This video explains how to determine if two lines are parallel, perpendicular, or neither given two points on each line.

# Determine if Two Lines Are Parallel, Perpendicular or Neither Given Two Points (Parallel)

This video explains how to determine if two lines are parallel, perpendicular, or neither given two points on each line.

# Determine the Slope of Parallel and Perpendicular Lines Given a Graph of a Line

This video explains how to determine the slope of parallel and perpendicular lines given the graph of a line.

# Determine the Slope of Parallel and Perpendicular Lines Given a Two Points

This video explains how to determine the slope of parallel and perpendicular lines given two points on each line.

# Determine the Slope of Parallel and Perpendicular Lines Given a Slope

This video reviews the definition of parallel and perpendicular lines. Then the slope of a parallel and perpendicular line is found given the slope of a line.

# Curious Calculation: 3 Digit Num Divided by Sum of Digits (Proof Included)

This video show a calculation starting with a 3 digit number with all the same digit divided by the sum of the digits is always the same result.