The parent function is given as:
f(x) = x²
y = x²
The graph is reflected across the x - axis
The x axis remains the same but the y axis is negated
g(x) = -x²
It is translated 4 units left
The function g(x) becomes
g(x) = -(x - 4)²
It is the translated 2 units down
g(x) = -(x - 4)² - 2
Simplifying the above equation:
g(x) = - (x² - 8x + 16) - 2
g(x) = -x² + 8x - 16 - 2
g(x) = -x² + 8x - 18