Expression 2: "y" equals negative .2 5 "x" plus 2.5 left brace, 5 less than "x" less than 10 , right brace Has graph. To audio trace, press ALT+T.y=−.25x+2.55<x<10
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Expression 3: "y" equals .2 5 "x" plus 2.5 left brace, negative 10 less than "x" less than negative 5 , right brace Has graph. To audio trace, press ALT+T.y=.25x+2.5−10<x<−5