(adsbygoogle = window.adsbygoogle || []).push({}); Algebra problem!!!

theres this question that i was given in my class notes and she wants us to try and solve it but i just dont get it and i need your help please. I think that you have to use completing the square method but im not sure, but heres the question

Find the value ofKfor which the line y=2x+Kis a tangent to the curve y=x²-2x-7.

please help me it would be much appreciated

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# Homework Help: Algebra problem

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