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Which statements about the graph of the function f(x) = 2x2 – x – 6 are true? Check all that apply. The domain of the function is . The range of the function is all real numbers…
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Which statements about the graph of the function f(x) = 2x2 – x – 6 are true? Check all that apply. The domain of the function is . The range of the function is all real numbers…
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Oct 25, 2017
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Which statements about the graph of the function f(x) = 2x2 – x – 6 are true? Check all that apply.
The domain of the function is .
The range of the function is all real numbers.
The vertex of the function is .
The function has two x-intercepts.
The function is increasing over the interval (, ∞).
Mathematics
high-school
Dennis Sheil
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Dennis Sheil
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Answer: -1/4, infinity
Explanation:
Abdul Basit Rishi
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Oct 26, 2017
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Abdul Basit Rishi
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Hello,
1: dom f=R
2: img f =R
3: 2x²-x-6=2(x²-2x/4+1/46)-6-1/8=2(x-1/4)²-49/8
Vertex=(1/4,-49,8)
4: roots are -3/2 and 2
2(x-1/4)²-49/8=1/8[(4x-1)²-49]=1/8*(4x+6)(4x-8)
5:
From the vertex to ∞
[-1/4 , ∞)
Omnix
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Oct 31, 2017
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Omnix
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