Which equation is the inverse of y is equal to 16 x squared plus 1 ?

To find the inverse, switch x and y: x = 16y² + 1. Subtract 1 and divide by 16 to get y² = (x − 1)/16, so y = ±√(x − 1)/4. This matches choice B, the fraction with numerator ±√(x − 1) and denominator 4.

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