Which phrase best describes the translation from the graph [tex]y = (x-5)^2 + 7[/tex] to the graph of [tex]y = (x+1)^2 - 2[/tex]?

A. 6 units left and 9 units down
B. 6 units right and 9 units down
C. 6 units left and 9 units up
D. 6 units right and 9 units up



Answer :

To understand the translation from the graph of [tex]\( y = (x-5)^2 + 7 \)[/tex] to the graph of [tex]\( y = (x+1)^2 - 2 \)[/tex], we need to analyze how the transformations affect the graph.

1. Identify Horizontal Translation:

- The original graph is [tex]\( y = (x-5)^2 + 7 \)[/tex].
- Notice the [tex]\( x \)[/tex]-term shift: it changes from [tex]\( (x-5) \)[/tex] to [tex]\( (x+1) \)[/tex].

To understand the movement:
[tex]\[ x - 5 \rightarrow x + 1 \][/tex]
This means that [tex]\( (x-5) \)[/tex] needs to change to [tex]\( (x+1) \)[/tex].

We see that [tex]\( x-5 \)[/tex] relates to [tex]\( x+1 \)[/tex] if you move 6 units right:
[tex]\[ (x-5) + 6 = x+1 \][/tex]

So, the graph shifts 6 units right.

2. Identify Vertical Translation:

- The original constant term is +7.
- The new constant term is -2.

To understand the movement:
[tex]\[ y = (x-5)^2 + 7 \rightarrow y = (x+1)^2 - 2 \][/tex]

To get from 7 to -2, you need to move down:
[tex]\[ 7 - 9 = -2 \][/tex]

So, the graph shifts 9 units down.

Thus, the best phrase to describe the complete translation from the graph [tex]\( y = (x-5)^2 + 7 \)[/tex] to [tex]\( y = (x+1)^2 - 2 \)[/tex] is:

6 units right and 9 units down.