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Bellwork 10/16. SLOPE- Day 1. What is the meaning of this sign?. Icy Road Ahead Steep Road Ahead Curvy Road Ahead Trucks Entering Highway Ahead. 7 feet. 7%. 100 feet. What does the 7% mean?.
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What is the meaning of this sign? • Icy Road Ahead • Steep Road Ahead • Curvy Road Ahead • Trucks Entering Highway Ahead
7 feet 7% 100 feet What does the 7% mean? 7% is the slope of the road. It means the road drops 7 feet vertically for every 100 feet horizontally. So, what is slope??? Slope is the steepness of a line.
Vocab 1.) Rise: __________________ 2.) Run: __________________ 3.) Slope: _________________
Positive slope, + work Negative slope, - work Zero slope is zero fun! NO slope. Oh No!!!! Slope Mountain Ski Resort watch the video
Types of Slope A line has a positive slope if it is going uphill from left to right. A line has a negative slope if it is going downhill from left to right.
What is the slope of a horizontal line? The line doesn’t rise! All horizontal lines have a slope of 0.
Zer0 slope The equation looks like (y= #) H O Y Horizontal line
What is the slope of a vertical line? The line doesn’t run! All vertical lines have an undefined slope.
V- vertical line U- undefined slopeX- the equation looks like (x = #)
1.) Start with the lower point and count how much you rise and run to get to the other point! 6 rise 3 3 = = run 6 Notice the slope is positive AND the line increases!
2.) Determine the slope of the line. When given the graph, it is easier to apply “rise over run”.
3.) The graph shows the cost of muffins at the bake sale. Find the slope of the line.
4.) Negative slope Find points on the graph. Use two of them and apply rise over run. -1 2 The line is decreasing (slope is negative). Q: Find the slope using two different points. Explain how your answer changes and why.
5.) Determine the slope of the line shown. • -2 • -½ • ½ • 2
. 7.) 8.)
Recap: Describe in words the process for finding the slope of a graph. Be prepared to verbally justify your steps. (Level 3)
The same slope formula can be used to find the slope when only given a set of coordinates or points.
Find the slope of the line that goes through the points (-5, 3) and (2, 1).
Find the slope of the line that passes through (3, 5) and (-1, 4). • 4 • -4 • ¼ • - ¼