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Mathematics 13 Online
OpenStudy (anonymous):

The points P and Q are on the graph of: y^2-xy+8=0 have the same x-coordinate x=6. Find the points of intersection of the tangents to the graph at P and Q.

OpenStudy (anonymous):

i did this and got -2, and -4 and took the derivative and found y' and plugged it in but must be doing something wrong because my answer is not in the choices

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