Question 46920
y = x^2 – 1

If x=0 then y= -1
If x=-1 then y=0
If x=1 then y=0
If x=-2 then y=3
If x=2 then y=3

Plot these points to see the shape of the graph.
Connect the points with a smooth curve to see the graph.
*[invoke quadratic "x",1,0,-1]
Hope this helps.
Cheers,
Stan H.