Expression 19: "y" equals StartFraction, negative 1 Over "m" Subscript, 1 , Baseline , EndFraction left parenthesis, "x" minus "B" Subscript, 1 , Baseline , right parenthesis plus "B" Subscript, 2 , Baseline Has graph. To audio trace, press ALT+T.y=−1m1x−B1+B2
19
Expression 20: "y" equals "m" Subscript, 1 , Baseline "x" Has graph. To audio trace, press ALT+T.y=m1x
20
Expression 21: StartFraction, negative 1 Over "m" Subscript, 1 , Baseline , EndFraction left parenthesis, "P" Subscript, 1 , Baseline minus "B" Subscript, 1 , Baseline , right parenthesis plus "B" Subscript, 2 , Baseline tilde "m" Subscript, 1 , Baseline "P" Subscript, 1 , Baseline Has regression. To access statistics, press Tab.−1m1P1−B1+B2~m1P1