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| Question 598052:  graph y= x^2 - 4 in a rectangular coordinate system
 Answer by Alan3354(69443)
      (Show Source): 
You can put this solution on YOUR website! graph y= x^2 - 4 in a rectangular coordinate system ----------
 Pick values for x and find y
 Plot the points
 Draw a curve thru them
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 eg x = 0, y = -4 --> (0,-4)
 Notice that + and minus values of x give the same y, so you get 2 points.
 Do as many points as you need, or care to.
 
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