anonymous
  • anonymous
1. Identify the domain and range. y = –1.5x²
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Directrix
  • Directrix
The domain is the set of acceptable values of x. In y = -1.5 x^2, there is no value x cannot have. So, the domain is the set of Reals. The range is the set of possible values of y. In y = -1.5x^2 , whatever is put in for x will be squared and then multiplied by a negative contant. So the question is, can -1.5x^2 ever be positve? If x = 0, then -1.5x^2 is 0 but not positve. And, 0 is the largest -1.5x^2 will ever be. So, the range is the set of non-positive Real numbers. That means 0 and the negative reals. Domain: Reals Range: y is Real such that y ≤ 0. Take a look at the graph: http://www.wolframalpha.com/input/?i=y+%3D+%E2%80%931.5x%C2%B2

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