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What is the range of the function y = - x 2 + 1?

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]