表达式4: "m" equals StartFraction, "f" left parenthesis, "b" , right parenthesis minus "f" left parenthesis, "a" , right parenthesis Over "b" minus "a" , EndFractionm=fb−fab−a
equals=
11
4
表达式5: "y" equals "m" left parenthesis, "x" minus "a" , right parenthesis plus "f" left parenthesis, "a" , right parenthesisy=mx−a+fa
5
隐藏 标签 left parenthesis, "a" , "f" left parenthesis, "a" , right parenthesis , right parenthesisa,fa
标签
equals=
left parenthesis, negative 1 , 1 , right parenthesis−1,1
6
隐藏 标签 left parenthesis, "b" , "f" left parenthesis, "b" , right parenthesis , right parenthesisb,fb
