Slope the quiz Section 4 4 The Concept

Slope, the quiz Section 4. 4

The Concept § On Friday you learned about slope § Today we’re going to take a “quiz” over some of the properties of slope

Example § The formula for slope is

Example § Slope is

Example § What is the y int of this line: y=-2 x-7

Example § What is the slope of this line Y=2 x+3

Example § What is the slope of the line that goes through the points (8, 4) and (3, -1)

Example § What is the slope of the line that goes through the points (-3, 2) and (1, 1)

Example § What is the slope of the line that goes through the points (3, 2) and (-1, 1)

Example § What is the slope of the line that goes through the points (-5, 2) and (-4, -5)

Example § What is the slope of the line -3 x+2 y=6

Example § What is the slope of the line that goes through the points (1, 5) and (3, 5)

Example § What is the slope of the line x=6

Example § These kind of lines have negative slopes

Example § These kind of lines have zero slopes Why?

Example § These kind of lines have positive slopes

Example § These kind of lines have undefined slopes Why?

§ Graph 4 x+2 y=10 Example Y X

§ Graph Y = -2 x+5 Example Y X

§ Graph Y = -2 x+5 Example Y X

Example § A line has a slope of 5 and goes through the point (15, -2). What is another point that the line goes through?

Example § A line has a slope of ½ and goes through the point (4, 7). What is another point that the line goes through?

Most Important Points § Review of slope basics § § § Slope is Rise/Run Slope Formula Positive Slopes—Increase as x increases Negative slopes---decrease as x increases Horizontal Line— 0 Slope Vertical line--- Undefined slope

Homework You my hand in any missing assignments from chapter 4