This applet helps us to see, geometrically, the properties of a function
being one-one and onto. The function will be one-one if every horizontal line 
, 
intersects the graph of 
in exactly one point. The function will be onto if every horizontal line 
, 
intersects the graph of 
at least once. APPLET 1.1
Instructions for using the Applet.
-
Select a function
from the combo box. -
Select domain and co-domain from the respective combo boxes.
-
Slide the green line on the display panel by holding and moving the slider with mouse, to check for one-one-ness and onto-ness.
-
Take a quiz below and Check your result.
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See the Explanation.