수식 7: "a" equals StartFraction, left parenthesis, "y" Subscript, 2 , Baseline minus "y" Subscript, 1 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 2 , Baseline minus "x" Subscript, 1 , Baseline , right parenthesis , EndFractiona=y2−y1x2−x1
equals=
0.4 9 5 3 7 0 3 7 0 3 70.49537037037
7
수식 8: "b" equals "y" Subscript, 1 , Baseline negative "a" times "x" Subscript, 1 , Baselineb=y1−a·x1
equals=
0.7 7 1 4 8 1 4 8 1 4 8 10.771481481481
8
수식 9: "y" equals "a" "x" plus "b"y=ax+b
9
수식 10: "y" equals negative StartFraction, "x" Over "a" , EndFraction plus "b"y=−xa+b
