What is the geographic representation of the tangent line not existing at (0,0) of the graph f(x) = |x|?

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Graphically, why isn't the $X$ axis considered a tangent line to the function $f(x) = |x|$ at point $(0,0)$? Is the graph too sharp? (V shaped) for there to be a tangent line?

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The $x$ axis is in fact one of the tangent lines to the graph of $f$ at the origin. The problem is that the tangent is not uniquely defined and as such is analytically uninteresting. Tangents at points where a function is differentiable have very interesting properties (given in part by their uniqueness) which just do not apply to tangents at points where the function is not differentiable.