Question

Let P(a,b) be a point on the curve root(x) + root(y) = 1. Show that the slope of the tangent at P is -[root[b/a]].

Answer 1

Ok first of all, I am confused as to how I will simplify the curve equation. If I square both sides, I get rid of the square roots of the y and x, and it simply becomes a linear equation right? So if I take the derivative of this, it becomes a constant..