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Activity 11: Slope Challenge

Added on 11/28/2007

 Downloads:
TI-73 PDF file
ACTIVITY OVERVIEW

In this activity we will:

  • Draw and compare line segments with different slopes
  • Use the line function in the DRAW menu.


  

The slope of a line or line segment is a RATIO of the vertical change of the line or line segment as compared to the horizontal change.


  
To set up the calculator to draw line segments, first press  and set your screen like the one on the right. Use the up, down and left, right arrow keys to move and then select items by pressing .  no alt text supplied
Press and make sure there are no functions graphed by pressing the  key and clear any functions. Then press  and select Zdecimal and press . 
no alt text supplied
Now you will draw a line with a slope of 2/3. From the graph screen, press the key and select 2:Line(.  Arrow until your cursor is at (-1,1). Press .  Then, use the arrow keys to move the cursor to (2.3) Press again.  Then press .  Your screen should look like the one at the right. Draw the vertical and horizontal change to form a triangle with the line segment no alt text supplied
Your challenge is to draw the slopes given in each problem on the calculator. Then, draw your segment on the graph at the right of each problem. Again, show the horizontal and vertical change on your graph on the paper and label them.  The problem above would now look like this. Press  and 1: ClrDraw to remove the previous problem. no alt text supplied
You get to decide where your line segment begins and ends for each problem.



Slope of segment  = -3/4

 no alt text supplied
Slope of segment  = 5/2 no alt text supplied
Slope of segment  = 1/3 no alt text supplied
Slope of segment  =  0 no alt text supplied

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