She identified the conic as a circle with a center open paren 4 comma negative 2 close paren and a radius r is equal to 4 What error, if any, did Mariah make?
Answer
A
Mariah should have added 400 and 100 to the right side of the equation in step 4
B
Mariah did not make an error.
C
Mariah factored incorrectly in step 5. She should have factored to open paren x minus 8 close paren squared and open paren y plus 4 close paren squared .
D
Mariah listed the center incorrectly. The center should be open paren negative 4 comma 2 close paren .