Warm-Up. Slope Slope Objectives: Define slope as the ratio of vertical rise to horizontal run. Determine the slope of a line given a graph. Determine.

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Objective - To find the slope of a line.

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Presentation transcript:

Warm-Up

Slope Slope Objectives: Define slope as the ratio of vertical rise to horizontal run. Determine the slope of a line given a graph. Determine the slope of a line given two points on the line. State the formula for slope as slope equation

Slope rise run Slope =

Example 1 Graph the line containing points (2,1) and (7,6) and find the slope rise run Slope =

Practice 1) (-2,3) (3,5) Graph the line containing these points and find their slopes. 2) (0,-3) (-3,2)

Slope Slope = or

Example 2 Find the slope of the line containing points (1,6) and (5,4).

Practice 1) (2,2) (8,9) Find the slope of the lines containing these points. 2) (-2,3) (2,1) 3) (5,-11) (-9,4)

Slope of a Horizontal Line What about the slope of a horizontal line? What is the rise? What is the run? 0 6 Slope = The slope of ANY horizontal line is 0.

Slope of a Vertical Line What about the slope of a vertical line? What is the rise? What is the run? 5 0 Slope = The slope of ANY vertical line is undefined.

Example Find the slope of the line y = -4. Slope =

Example Find the slope of the line x = 7. Slope = The line has no slope.

Practice 1) (9,7) (3,7) Find the slopes, if they exist, of the lines containing these points. 2) (4,-6) (4,0) 3) (2,4) (-1,5)

Homework Worksheet on Slope