Question 78138
First make a table

<pre>    
      x          y
   -5.00000   -9.50000
   -4.00000   -5.00000
   -3.00000   -1.50000
   -2.00000    1.00000
   -1.00000    2.50000
    0.00000    3.00000
    1.00000    2.50000
    2.00000    1.00000
    3.00000   -1.50000
    4.00000   -5.00000
    5.00000   -9.50000

</pre>

Now plot each point and draw a parabola through them like this:

{{{ graph( 300, 200, -6, 5, -10, 10, (-1/2)x^2+3) }}} graph of {{{y=(-1/2)x^2+3}}}