SOLUTION: How to you tell if the equation is a vertical or horizontail strech or shrink? Ex. f(x)= 3-4 or something like that.

Question 342273: How to you tell if the equation is a vertical or horizontail strech or shrink? Ex. f(x)= 3-4 or something like that.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How to you tell if the equation is a vertical or horizontail stretch or shrink?
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Example:
y = x^2
y = 3x^2 causes a vertical shrink (the parabola is narrower)
--
y = (1/3)x^2 causes a vertical stretch (the parabola is broader)
---
y = (x-2)^2 causes a horizontal shift to the right.
---
y = (x+2)^2 causes a horizontal shift to the left.
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Cheers,
Stan H.
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