Question 50341
Usually you are not given the values of x. You just make them up yourself.  Of course, you should use easy numbers.  I would say in most problems, just let x=0, x=1, x=2, x=-1, etc.  It really depends upon the problem. If you know it is a straight line, then you only need about 2 points.  If it is NOT a straight line, it may take a half dozen or more points, depending upon how good you are a figuring out the pattern of numbers, and the shape of the graph.


Do you have a graphing calculator??  That's handy if you are allowed to use one.  Your particular graphs should look like this:
{{{graph (300,300, -6,6,-6,6, 2x,2x^2)}}}



R^2 at SCC