ABC is reflected across x = 1 and y = -3. What are the coordinates of the reflection image of B after both reflections?A. (-7, -1)B. (-7, 1)C. (7, 1)D. (7, -1)

ABC is reflected across x 1 and y 3 What are the coordinates of the reflection image of B after both reflectionsA 7 1B 7 1C 7 1D 7 1 class=

Respuesta :

Answer:

The correct option is C.

Step-by-step explanation:

From the given figure it is noticed that the coordinates of B are (-5,-7).

If ABC is reflected across x = 1, then

[tex](x,y)\rightarrow(1-(x-1),y)[/tex]

[tex](x,y)\rightarrow(2-x,y)[/tex]

[tex](-5,-7)\rightarrow(2+5,-7)[/tex]

[tex](-5,-7)\rightarrow(7,-7)[/tex]

If ABC is reflected across y =-3.

[tex](x,y)\rightarrow(x,-3-(y-(-3)))[/tex]

[tex](x,y)\rightarrow(x,-6-y)[/tex]

[tex](7,-7)\rightarrow(7,-6-(-7))[/tex]

[tex](7,-7)\rightarrow(7,1)[/tex]

Therefore option C is correct.

Ver imagen DelcieRiveria