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OpenStudy (anonymous):
if the slope of the curve x^2 +y^2 =25 is equal to -(3/4), what is the point of tangency? A.(2,3) b.(3,4) c.(3,4,2) d.(3,5,4)
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OpenStudy (anonymous):
b
OpenStudy (anonymous):
last 2 answers don't even make sense!
OpenStudy (callisto):
diff both sides wrt x, 2y(dy/dx) +2x =0 =>dy/dx=-2x/2y = -x/y the sub number to get -3/4 that is B
OpenStudy (anonymous):
thx for the help guys
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