Hubbard, Elaine. <br/><br/>
Elementary algebra : a graphing approach / 
Elaine Hubbard, Ronald D. Robinson 
 - Lexington Mass :  D.C.Heath,  c1996 
 - xvi, 653, [48] p 
<br/><br/><label>ISBN: </label>0669354996 
<br/><br/><label>Dewey Class. No.: </label>512.9  / H875E