Slope of parallel and perpendicular lines postulate

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Presentation transcript:

Slope of parallel and perpendicular lines postulate BY AMY DIETRICH

Slope of parallel line postulate Parallel lines that have the same slope. In a coordinate plane, two non-vertical lines are parallel if and only if they have the same slope. Any two lines are parallel.

Real life examples of parallel lines Math When put on a coordinate plane, 1st street has the equation y = 6x – 7. 2nd street is parallel to 1st street and goes through the point (2, 9). Write the equation for 2nd Street in slope-intercept form. ART

Slope of perpendicular lines postulate Perpendicular lines have opposite negative reciprocal slopes. In a coordinate plane, two non-vertical lines are perpendicular if and only if the product of their slopes is –1. Vertical and horizontal lines are perpendicular.

Real life examples of perpendicular lines Math Roads