表达式6: "y" minus StartFraction, 2 StartRoot, 3 , EndRoot Over 3 , EndFraction equals negative StartFraction, StartRoot, 3 , EndRoot Over 3 , EndFraction left parenthesis, "x" minus 2 thirds , right parenthesisy−233=−33x−23
6
表达式7: "y" equals negative StartFraction, StartRoot, 3 , EndRoot Over 3 , EndFraction left parenthesis, "x" minus 4 thirds , right parenthesisy=−33x−43
7
表达式8: "y" equals StartFraction, StartRoot, 3 , EndRoot Over 3 , EndFraction left parenthesis, "x" minus 2 thirds , right parenthesisy=33x−23
8
表达式9: "y" minus StartFraction, StartRoot, 3 , EndRoot Over 3 , EndFraction equals StartFraction, StartRoot, 3 , EndRoot Over 3 , EndFraction left parenthesis, "x" minus 1 third , right parenthesisy−33=33x−13