INSTRUCTORS Carleen Eaton Grant Fraser

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Slope

• The slope of a straight line is a measure of how steep the line is. Lines that increase as x increases have positive slopes, those that decrease as x increases have negative slopes.

• Slope is defined to be the change in the y-coordinates of two points divided by the change in the x-coordinates of those points.

• The slope is the same no matter which two points you pick to compute it.

• A vertical line has no slope, a horizontal line has a slope of 0.

• Non-vertical parallel lines have the same slope, non-vertical perpendicular lines have slopes whose product is – 1.

Slope

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

• Intro 0:00
• Definition of Slope 0:23
• Interpretation of Slope 2:19
• Example: 0 Slope and Undefined Slope
• Example: Positive Slope
• Example: Negative Slope
• Parallel Lines 6:16
• Perpendicular Lines 7:15
• Lecture Example 1 8:20
• Lecture Example 2 10:45