Equations of the tangent that pass through a point

I'm trying to determine the tangents to the curve that pass through the point

I got the first equation right, but the second one is apparently wrong (according to the book).

What I did was set the derivative equal to the slope of two points. Points I used were and which which would leave the slope to be

First equation is the tangent that passes through so . Finding the equation by setting the derivative at equal to the slope like this:

But I'm getting a different answer for the second equation:/

The book has the second equation as: