Expression 14: "b" Subscript, "t" , Baseline equals "y" Subscript, 0 , Baseline minus "a" Subscript, "t" , Baseline "x" Subscript, 0 , Baselinebt=y0−atx0
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Expression 15: "y" equals "a" Subscript, "t" , Baseline "x" plus "b" Subscript, "t" , Baseliney=atx+bt
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Expression 17: "a" Subscript, "s" , Baseline equals StartFraction, "f" left parenthesis, "x" Subscript, 0 , Baseline plus "h" , right parenthesis minus "f" left parenthesis, "x" Subscript, 0 , Baseline , right parenthesis Over left parenthesis, "x" Subscript, 0 , Baseline plus "h" , right parenthesis minus left parenthesis, "x" Subscript, 0 , Baseline , right parenthesis , EndFractionas=fx0+h−fx0x0+h−x0
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Expression 18: StartFraction, "f" left parenthesis, "x" Subscript, 0 , Baseline plus "h" , right parenthesis minus "y" Subscript, 0 , Baseline Over "h" , EndFractionfx0+h−y0h
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Expression 19: "y" equals "a" Subscript, "s" , Baseline left parenthesis, "x" minus "x" Subscript, 0 , Baseline , right parenthesis plus "y" Subscript, 0 , Baseliney=asx−x0+y0
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Expression 20: "y" equals "a" Subscript, "s" , Baseline "x" minus "a" Subscript, "s" , Baseline "x" Subscript, 0 , Baseline plus "y" Subscript, 0 , Baseliney=asx−asx0+y0
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Expression 21: "b" Subscript, "s" , Baseline equals "y" Subscript, 0 , Baseline minus "a" Subscript, "s" , Baseline "x" Subscript, 0 , Baselinebs=y0−asx0
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Expression 22: "y" equals "a" Subscript, "s" , Baseline "x" plus "b" Subscript, "s" , Baseliney=asx+bs
