Sketch the graph of the function $y=2\cos x$. Label all the $x-$intercepts on your sketch graphs.

Write down the function shown in graph

Write down the function shown in graph

Write down the function shown in graph

Write down the function shown in graph

$y=2\cos x$, $y=0.5\sin x$, $y=4\cos x$, $y=2\sin x$ 

when graphed chose which of the above function(s) intersect the $y$-axis at $\left(0,2\right)$.