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GeoGebraGeoGebra Kennslustofan

Domain & Range 3

The graph below shows the function .

How far left can you extend the horizontal bar? Why can't it go any further? Explain.

How far down can you extend the blue line? How far up can you extend it? What do each of these values have to do with the formula ?

Write down the formula for a function whose red bar cannot extend to the left of x = 2. Explain why your function has this property.