Answer: d) f(x) = (x + 8)² + 1
Explanation:
The vertex form of a quadratic equation is: f(x) = (x - h)² + k
where (h, k) is the vertex. The h-value represents the horizontal shift (negative is left and positive is right) and the k-value represents the vertical shift (positive is up and negative is down).
1 unit UP and 8 units LEFT means: f(x) = (x - (-8))² + (1) → f(x) = (x + 8)² + 1