Help with Graphs

h(7)   .....we go to  "7"  on the x axis   and go up from there  .....note that we intersect the graph at y = 5

So

h(7)  = 5

So

h (h(7))  =   h(5)

Now....we do the same thing

Go to "5" on the axis ....this time...we go down and intersect  the graph at y = -1

So

h(h(7)) = h(5)  =  -1