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# Slope of a line and Parallel and Perpendicular slopes pg. 47 - PowerPoint PPT Presentation

Slope of a line and Parallel and Perpendicular slopes pg. 47. Slope: Slope indicates both how steep the line is and its direction, upward (positive) or downward (negative) from left to right. Horizontal lines have a slope of zero . Vertical lines have an undefined slope .

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## PowerPoint Slideshow about ' Slope of a line and Parallel and Perpendicular slopes pg. 47' - hoyt-vinson

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Presentation Transcript

• Slope:

• Slope indicates both how steep the line is and its direction, upward (positive) or downward (negative) from left to right.

• Horizontal lines have a slope of zero.

• Vertical lines have an undefined slope.

• In y = mx +b, m is used to denote the slope.

• Parallel lines NEVER intersect.

• Parallel lines have the SAME SLOPE.

• Perpendicular lines intersect at a right angle.

• Perpendicular lines have opposite reciprocal slopes. Ex: If one line has a

slope of , then any line

perpendicular to it has a slope of .