Answer:
Step-by-step explanation:
y=3(x+1)²
note : y ≥ 0 because : 3(x+1)² ≥ 0
calculate x : (x+1)² = y/3
x + 1 = √(y/3) or x + 1 = - √(y/3)
x = -1 + √(y/3) or x = - 1 - √(y/3)
