Which equation is the inverse of y is equal to 9 x squared minus 4 ?

To find the inverse, switch x and y in the original equation: x = 9y² − 4. Add 4 and divide by 9 to get y² = (x + 4)/9, so y = ±√(x + 4)/3. This matches the choice with plus or minus the square root of x plus 4, divided by 3.

AI-written and checked against the verified answer.