Question

Please help 20 POINTS. Problem below

Answer 1

f(x): y = 9x² - 12

f⁻¹(x): x = 9y² - 12

x + 12 = 9y²

`(x+12)/(9) = y^(2)`

`\sqrt{(x+12)/(9)} = |y|` ; x ≥ -12

`+/-\sqrt{(x+12)/(9)} = y`

Answer: C