is the point on the curve where .

The tangent to the curve at has equation .

What is the value of ?

am not sure how to go about this question,

but so far i have done

$\displaystyle \frac{dy}{dx} = 2x - 1 $

$\displaystyle y = -6x-5 $

where do I go from here?

equation both equations?

I get $\displaystyle 2x-2 = -6x-5 $

I dont know what to do? Any help appreciated