Expression 2: "f" left parenthesis, "x" , right parenthesis equals 2 "x" plus 6 left brace, "x" less than negative 3 , right brace Has graph. To audio trace, press ALT+T.fx=2x+6x<−3
2
Hole at (-3, 0) left parenthesis, negative 3 , 0 , right parenthesis Has graph. To audio trace, press ALT+T.−3,0