Expression 27: "y" equals "m" Subscript, 1 , Baseline left parenthesis, "x" minus "F" Subscript, 1 , Baseline , right parenthesis plus "F" Subscript, 2 , Baseliney=m1x−F1+F2
27
Expression 28: "y" equals StartFraction, negative 1 Over "m" Subscript, 1 , Baseline , EndFraction left parenthesis, "x" minus "X" , right parenthesisy=−1m1x−X
28
Expression 29: "y" equals StartFraction, negative 1 Over "m" Subscript, 1 , Baseline , EndFraction left parenthesis, "x" minus "D" Subscript, 1 , Baseline , right parenthesisy=−1m1x−D1
29
Expression 30: "m" Subscript, 1 , Baseline "I" Subscript, 1 , Baseline tilde StartFraction, negative 1 Over "m" Subscript, 1 , Baseline , EndFraction left parenthesis, "I" Subscript, 1 , Baseline minus "X" , right parenthesism1I1~−1m1I1−X