Finding the equation of a tangent line

The equation of the paraboloid is given as z=x^2+y^2 at the point x+1 and y=2, and I was wondering how to figure out the equation of the tangent as well as the normal line to the tangent. I know the graph will sort of look like a "bowl" around the z axis, and I know the normal will cross the z-axis as well as another point of intersection on the bowl.

But how do I go about finding the equation of the tangent plane? Thank you in advance.

Re: Finding the equation of a tangent line

There will be infinitely many tangents. You need to decide which direction you want your tangent to go in.

Re: Finding the equation of a tangent line

Didn't I do this earlier today? I specifically remember the "point x+ 1 and y= 2" and thinking, "Okay, he really means x= 1 and y= 2". In case I only imagined responding that, here's what I imagine I said: The equation is the same as so we can this surface as a level surface for . then is perpendicular to the surface at (x, y, z). In particular, at (x, y, z)= (1, 2, 5), that is is the normal vector to the surface so 2(x- 1)+ 4(y- 2)- (z- 5)= 0 is the tangent plane. Of course, the normal line is given by (x, y, z)= (2, 4, -1)t+ (1, 2, 5).