Determine equations of all lines

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SUMMARY

The discussion focuses on determining the equations of all lines tangent to the function y = x²/(x-1) that pass through the point (2,0). The derivative of the function, y' = x(x-2)/(x-1)², is calculated to find the slope of the tangent lines at any point (a, f(a)). The user attempts to equate the slope of the tangent line, given by f'(a), with the slope derived from the two points (a, f(a)) and (2, 0). The key challenge is solving for the variable 'a' to find the tangent lines.

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Homework Statement



Determine equations of all lines the are tangent to y=x^2/(x-1) and that pass through the point (2,0).

Homework Equations





The Attempt at a Solution


First I found the y' which I came up with y'=x(x-2)/(x-1)^2

next, let (a,f(a)) and put a to y'
f'(a)=a(a-2)/(a-1)^2 (slope of tangent lines at x=a) ->①
also this slope is given by f(a)-0/a-2 -> ②
①=② then solve for a, but I stuck for calculating this...

Am I on the right truck ?? can anyone help me, please??
 
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You have the x,y co-ordinates of a general point on the curve, you have the slope of the tangent through that point, get the equation for that line. When you have done that I expect you can do the rest too.
 
What is the slope of a line passing through points (x1, y1) and (x2, y2) ?

Then:
Let (x2, y2) = (a, f(a)), and (x1, y1) = (2, 0). You know the slope of the line passing through these two points must be f ' (a) , if the line is to be tangent to the curve y=x2/(x-1) at x = a.
 

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