Expression 9: "y" minus "y" Subscript, "a" , Baseline equals "m" left parenthesis, "x" minus "x" Subscript, "a" , Baseline , right parenthesisy−ya=mx−xa
9
Expression 10: "m" equals StartFraction, "y" Subscript, "b" , Baseline minus "y" Subscript, "a" , Baseline Over "x" Subscript, "b" , Baseline minus "x" Subscript, "a" , Baseline , EndFractionm=yb−yaxb−xa
equals=
0.7 50.75
10
Expression 11: distance left parenthesis, left parenthesis, "x" Subscript, "a" , Baseline , "y" Subscript, "a" , Baseline , right parenthesis , left parenthesis, "y" Subscript, "b" , Baseline , "x" Subscript, "b" , Baseline , right parenthesis , right parenthesisdistancexa,ya,yb,xb