Using the DRAW Menu





2. From the HOME
screen: From the home screen, you may designate
specific coordinates for the line segment.
Line(X_{1}, Y_{1}, X_{2}, Y_{2})
and hit ENTER. To erase a line
segment type 0 as the fifth parameter: Line (2, 3, 4, 6, 0) and hit ENTER. 




Draw a horizontal or vertical line 
#3 Horizontal, #4 Vertical 1. To Draw a moveable line on your graph: Hit GRAPH. Choose DRAW, #4 Vertical. Now move your cursor left and right to create a moving vertical line. (Nice for demonstrating the Vertical Line Test for functions.) The same applies to #3 Horizontal. (Nice for demonstrating Horizontal Line Test for existence of inverse functions.) To secure any of these lines, press ENTER. To cancel, press CLEAR.
2. To Draw from the home screen:
From the home screen, press DRAW, #3
Horizontal. 
Finding Your Way Around
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