Compare the graph of $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ with $p ( x ) = x ^ { 2 }$.
A) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts right 9 units, shifts downward 9 units, and shrinks by a factor of $- \frac { 1 } { 9 }$.

B) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts right 81 units, shifts upward 9 units, and shrinks by a factor of $\frac { 1 } { 9 }$.

C) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts left 9 units, shifts downward 9 units, and shrinks by a factor of $\frac { 1 } { 9 }$.
D) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts right 9 units, shifts upward 9 units, and shrinks by a factor of $\frac { 1 } { 9 }$.
E) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts left 81 units, shifts upward 9 units, and shrinks by a factor of $- \frac { 1 } { 3 }$.

Question

Compare the graph of $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ with $p ( x ) = x ^ { 2 }$.
A) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts right 9 units, shifts downward 9 units, and shrinks by a factor of $- \frac { 1 } { 9 }$.

B) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts right 81 units, shifts upward 9 units, and shrinks by a factor of $\frac { 1 } { 9 }$.

C) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts left 9 units, shifts downward 9 units, and shrinks by a factor of $\frac { 1 } { 9 }$.
D) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts right 9 units, shifts upward 9 units, and shrinks by a factor of $\frac { 1 } { 9 }$.
E) $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$ shifts left 81 units, shifts upward 9 units, and shrinks by a factor of $- \frac { 1 } { 3 }$.

Quizplus · Accepted Answer

The correct transformation involves a leftward shift of 9 units due to the "+9" inside the parenthesis, a downward shift of 9 units because of the "-9" outside the square, and a vertical shrink by a factor of $\frac{1}{9}$ (since the square of $-\frac{1}{3}$ is $\frac{1}{9}$).

Compare the Graph Of p(x)=[−13(x+9)]2−9p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9p(x)=[−31​(x+9)]2−9

Compare the Graph Of $p ( x ) = \left[ - \frac { 1 } { 3 } ( x + 9 ) \right] ^ { 2 } - 9$