A woman 38 years old has a daughter 14 years old. How many years ago was the woman 8 times older than the daughter?
1 answer:
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ANSWER
P'(6,-1)
EXPLANATION
The mapping for a reflection in the line y=x is
The line y=x is the mirror line for a function and it's inverse.
The x and y coordinates swap position.
The reflection of point P(−1, 6) across the line y = x is
P'(6,-1)