Expression 3: 0.5 times "q" times "q" plus "q" left brace, 0 greater than or equal to "x" greater than negative 1.5 , right brace Has graph. To audio trace, press ALT+T.0.5·q·q+q0≥x>−1.5
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Expression 4: "q" left brace, 0 less than "x" , right brace Has graph. To audio trace, press ALT+T.q0<x
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Expression 5: 0.1 2 5 * "x" minus 0.2 8 1 2 5 left brace, "x" less than or equal to negative 1.5 , right brace Has graph. To audio trace, press ALT+T.0.125*x−0.28125x≤−1.5