Expression 4: "y" equals negative 1 half "x" plus 1 left brace, 0 less than or equal to "x" less than or equal to 4 , right brace Has graph. To audio trace, press ALT+T.y=−12x+10≤x≤4
4
Expression 5: "x" equals 0 left brace, 1 less than or equal to "y" less than or equal to 2 , right brace Has graph. To audio trace, press ALT+T.x=01≤y≤2
5
Expression 6: "x" equals 4 left brace, negative 1 less than or equal to "y" less than or equal to 3 , right brace Has graph. To audio trace, press ALT+T.x=4−1≤y≤3