Answers

2014-10-22T21:39:47+08:00
6x-15y = 30
-15y = - 6x +30
15y = 6x-30        / * -1, to both side of the equation
y =  6x/15 -30/15
 y  =  6/15x -2        / slope intercept form:  y= mx + b
   the slope is    6/15
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