Work Step by Step
The graph is that of $y=\cos x$ except that it has been translated two units up. Therefore, the graph is of the form $y=c+\cos x$. According to the rules of translating graphs, the translation is $c$ units up if $c$ is greater than zero. Conversely, the translation is $|c|$ units down if $c$ is less than zero. Since the graph is that of $y=\cos x$ which has been translated two units up, the equation of the graph is $y=2+\cos x$.