Write the Equation in the Form $\mathbf { y = a ( x - h )} \mathbf {^ { 2 } + k.}$

Multiple Choice

Write the equation in the form $\mathbf { y = a ( x - h ) } \mathbf {^ { 2 } + k.}$
- $y = x ^ { 2 } + 2 x - 7$

A) $y = ( x - 1 ) ^ { 2 } - 6$
B) $y = ( x + 1 ) ^ { 2 } - 8$
C) $y = ( x + 1 ) ^ { 2 } - 6$
D) $y = ( x - 1 ) ^ { 2 } - 8$