Your y-intercepts seem to be incorrect. When you plug in x=0 into your equation, you do not get 4 and -4 for the y-values.
The general equation is:
you can then shift this anyway you like.
More at : Hyperbola -- from Wolfram MathWorld
Your y-intercepts seem to be incorrect. When you plug in x=0 into your equation, you do not get 4 and -4 for the y-values.
The general equation is:
you can then shift this anyway you like.
More at : Hyperbola -- from Wolfram MathWorld