The y-in is -6
The x- in is -1 and -6
The vertex is (-3.5,-6.25)
The axis is -3.5
The answer is z = -13.9
In order to solve this, you need to use inverse operations. The inverse operation of addition is subtraction. So, this is the function we'll use
4.9 + z = -9 ----> subtract 4.9 from both sides
z = -13.9
D is the correct answer to the equation.
