SOLUTION: Graph the quadratic equation after completing the given table of values. Can someone show how to do this? y = x^2-1

Question 42639: Graph the quadratic equation after completing the given table of values.
Can someone show how to do this?
y = x^2-1
Found 2 solutions by Nate, Socom491:
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!

vertex = ((-b/2a),f(x)) = (0,-1)
pick points:
x=1 ; y=0
x=-1 ; y=0
match the points to get a U-shaped graphed line

Answer by Socom491(19) (Show Source): You can put this solution on YOUR website!
ok, for the table of values I'm going to pick numbers for x which are quite small so we don't have a huge axis. Also remember, when doing these problems, there can be any number for x. So I'll pick three values for x: 1, 2, and 3.
The equation for the line is y=x^2-1.
For the first value we plug 1 the number for x, so,
For the second we plug in 2 for x and solve.
For the third, we plug in 3 for x and solve also.
Now that we know what both x and y equal, we plot them on the axis for each value that we found. So the first one would be 1,0. The second 2,3; The third, 3,8;

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