X 2 3 Y 4 ( ) 当X Y成正比例时,y的值是() 当X Y成反比例时,y的值是()
问题描述:
X 2 3 Y 4 ( ) 当X Y成正比例时,y的值是() 当X Y成反比例时,y的值是()
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答
Y1 = KX
Y2 = M / X
Y = KX + M / X
X = 1
Y = K +米= -4
X = 2
= 2K + M / 2 = -1
解决K = 2/3,M = -14 / 3
Y = 2X / 3-14 /(3倍)