Linear    
Linear
m: slope
b: y-intercept
: x-intercept
domain:
range:
Note: if m = 0, the range is only b
horizontal line:
vertical line:
cannot be written in this form
written as x = a
if
the line slants from lower left to upper right
if
the line slants from upper left to lower right
Examples
(indentity function)

 

 

 

 

 

 

 

Interactive*