Understanding how to substitute values into an expression is an essential skill when using graphs to estimate values of \(x\) and \(y\). There are no straight-line segments on a quadratic graph.

Find all intervals on which \(f\) is concave up and those on which \(f\) is concave down. Find the \((x,y)\) coordinates of all inflection points, if any. Sketch the graph of \(y=f(x)\) using all of ...