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OpenStudy (anonymous):
Determine in which direction the parabola below opens. y = -2x^2 + 5x - 2
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ganeshie8 (ganeshie8):
look at the leading coeffecient
ganeshie8 (ganeshie8):
is it positive or negative ?
OpenStudy (anonymous):
negative
ganeshie8 (ganeshie8):
yes, so for large values of x, the graph sinks down. so the graph opens DOWN.
ganeshie8 (ganeshie8):
|dw:1394860498023:dw|
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ganeshie8 (ganeshie8):
in general : leading coefficient POSITIVE : graph opens UP leading coefficient NEGATIVE : graph opens DOWN
OpenStudy (anonymous):
oh alright, thankyouu :)
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