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OpenStudy (anonymous):
what is the parametric equation of the line that is tangent to the parabola y=x^2 at the point (-2,4)?
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OpenStudy (anonymous):
find the slope
OpenStudy (anonymous):
at that point
OpenStudy (anonymous):
the slope will be -4
OpenStudy (anonymous):
so then u have a vector
OpenStudy (anonymous):
because -4= change in y / change in x
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OpenStudy (anonymous):
and for equation of a line u need a point and vector
OpenStudy (anonymous):
|dw:1355177386061:dw|
OpenStudy (anonymous):
|dw:1355177414738:dw|
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