Answer :

tramserran

Answer: y ≤ 1

Step-by-step explanation:

Range refers to the y-values.  

y = -x² + 1  is an "upside down" parabola with the vertex at (0, 1).  

The highest y-value is 1.  The lowest y-value is negative infinity.

This can be written as: y ≤ 1       or     (-∞, 1]

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