Expression 3: "y" minus 9 equals 1 third left parenthesis, "x" minus 8 , right parenthesis left brace, 8 less than or equal to "x" less than or equal to 14 , right brace Has graph. To audio trace, press ALT+T.y−9=13x−88≤x≤14
3
Expression 4: "y" equals 11 left brace, 14 less than "x" less than 18 , right brace Has graph. To audio trace, press ALT+T.y=1114<x<18