Expression 2: "y" equals "m" "x" positive "c" left brace, 0 less than or equal to "x" less than or equal to 6 , right brace Has graph. To audio trace, press ALT+T.y=mx+c0≤x≤6
2
Expression 3: "m" equals negative 2.5m=−2.5
negative 3−3
33
3
Expression 4: "c" equals 3c=3
negative 15−15
33
4
5
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left parenthesis, 6 , negative 12 , right parenthesis6,−12