How do I plot an arc or a parabola

I just started learning matlab and I have found plotting an arc and parabola very difficult no matter how hard I read previously posted questions about it. Here is a picture of what I wanna try to plot with the arcs hand drawn using paint. However am gonna use one side as an example (the parabola in red). My start point=[2,10], critical point=[4,9], end point=[5,10]. Thank you