SOLUTION: give the domain and range of the following quadratic function: Y=3x2+ 2x -3

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Question 971508: give the domain and range of the following quadratic
function:
Y=3x2+ 2x -3
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
give the domain and range of the following quadratic
function:
Y=3x2+ 2x -3
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Domain:: All Real Numbers
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Range ?
Vertex occurs at x = -b/(2a) = -2/(6) = -1/3
and f(-1/3) = 3(1/9)-(2/3)- 3 = -2/3
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Since the parabola opens "up",
Range is "All Real Numbers >= -1/3
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Cheers,
Stan H.
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