问题描述：
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the values of x and y in the table above are related so that (y-1) is directly proportionao to (x+1) what is the value of b-a
表格就不画了 = =
x=0,y-10 ;x=1,y=a ; x=2,y=b
the values of x and y in the table above are related so that (y-1) is directly proportionao to (x+1) what is the value of b-a
表格就不画了 = =
x=0,y-10 ;x=1,y=a ; x=2,y=b
问题解答：
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