s lope s lopes are commonly associated with mountains
TRANSCRIPT
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SLOPE
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SLOPES ARE COMMONLY ASSOCIATED WITH MOUNTAINS.
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THE SLOPE WE ARE STUDYING IS ASSOCIATED WITH THE GRAPH OF A LINE.
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DEFINITIONS OF SLOPE
The tilt or inclination of a line
The ratio of vertical change to horizontal change.
The change in y over the change in x
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TILT OR INCLINATION
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VERTICAL CHANGEHORIZONTAL CHANGE
This ratio is also known as
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HOW MANY POINTS DO YOU NEED TO DRAW A LINE?
One
Two
Three
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GRAPH (3,2) AND (-1,-1)
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DRAW A LINE THROUGH THE POINTS.
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NOW THAT WE HAVE OUR LINE LETS FIND ITS SLOPE.
Remember we are finding the following ratio:Vertical or Rise
Horizontal Run
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VERTICAL CHANGEOR THE RISE
3
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HORIZONTAL CHANGEOR THE RUN
4
3
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VERTICAL RISE
HORIZONTAL RUN
34
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FIND THE SLOPE OF THE FOLLOWING LINE.
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THE SLOPE IS…
12
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FIND THE SLOPE OF THE LINE.
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THE SLOPE IS….
-3
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FIND THE SLOPE OF THESE LINES.
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THE SLOPE IS…Black line = 3
Red Line = 1
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FIND THE SLOPE OF THESE LINES
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THE SLOPE IS…
Orange line 0
Green Line Undefined
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LET’S DRAW A LINE USING SLOPE.
What else do you think you need besides the slope in order to draw a line?
A point!
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IF YOU KNOW THE SLOPE AND ONE POINT ON THE LINE YOU CAN DRAW THE LINE.EXAMPLE: SLOPE IS 1/3 AND THE POINT (-2,-1)
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NOW YOU DRAW A LINE.Given: slope is 2/3 and the point is (1,0)
Given: slope is –3 and the point is (–2,4)
lope is 1 and the point is (2,3)
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THE GRAPHS ARE…
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STUDENT ACTIVITY
You will now receive a worksheet. You are to find the slope of a line and draw a line given the slope and a point. Turn the worksheet in when completed.
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WORK TIME
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CHANGE IN Y OVER THE CHANGE IN X
The formula for finding the slope of a line.
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CLASS ACTIVITY
Click on the following link for slope practice.
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CLOSING ACTIVITY
You will receive a second worksheet. Given 2 points, find the slope using the slope formula. You will turn in the worksheet.