Expression 50: "y" equals "m" Subscript, 2 , Baseline left parenthesis, "x" minus "S" Subscript, 1 , Baseline , right parenthesisy=m2x−S1
50
Expression 51: "y" equals "m" Subscript, 3 , Baseline left parenthesis, "x" minus "G" Subscript, 1 , Baseline , right parenthesis plus "G" Subscript, 2 , Baseliney=m3x−G1+G2
51
Expression 52: "m" Subscript, 2 , Baseline left parenthesis, "x" minus "S" Subscript, 1 , Baseline , right parenthesis equals "m" Subscript, 3 , Baseline left parenthesis, "x" minus "G" Subscript, 1 , Baseline , right parenthesis plus "G" Subscript, 2 , Baselinem2x−S1=m3x−G1+G2