Expression 20: "f" left parenthesis, "x" , right parenthesis equals "m" Subscript, 1 , Baseline left parenthesis, "x" minus "E" Subscript, 1 , Baseline , right parenthesisfx=m1x−E1
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Expression 21: "g" left parenthesis, "x" , right parenthesis equals StartFraction, negative 1 Over "m" Subscript, 1 , Baseline , EndFraction left parenthesis, "x" minus "F" Subscript, 1 , Baseline , right parenthesis plus "F" Subscript, 2 , Baselinegx=−1m1x−F1+F2
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Expression 22: "f" left parenthesis, "H" Subscript, 1 , Baseline , right parenthesis tilde "g" left parenthesis, "H" Subscript, 1 , Baseline , right parenthesisfH1~gH1
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Expression 23: "H" Subscript, 2 , Baseline equals "g" left parenthesis, "H" Subscript, 1 , Baseline , right parenthesisH2=gH1
equals=
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Graphs
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Expression 25: polygon left parenthesis, "C" , "D" , "E" , "G" , right parenthesispolygonC,D,E,G
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Expression 26: polygon left parenthesis, "A" , "B" , "C" , "D" , right parenthesispolygonA,B,C,D
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Expression 27: polygon left parenthesis, "E" , "G" , right parenthesispolygonE,G