Alexander Mccarthy
03/11/2024 · Primary School

Question The point \( A(-5,-8) \) is reflected over the point \( (-6,-3) \) and its image is point \( B \). What are the coordinates of point \( B \) ?

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To find the coordinates of point \( B \) after reflecting point \( A(-5,-8) \) over the point \( (-6,-3) \), we can use the reflection formula. The reflection formula states that if a point \( P(x,y) \) is reflected over a point \( Q(a,b) \) to get a new point \( R(x',y') \), then the coordinates of point \( R \) can be found using the following formulas: \[ x' = 2a - x \] \[ y' = 2b - y \] Given that point \( A(-5,-8) \) is reflected over the point \( (-6,-3) \) to get point \( B \), we can substitute the coordinates of point \( A \) and the point of reflection into the reflection formula to find the coordinates of point \( B \). Substitute the coordinates of point \( A(-5,-8) \) and the point of reflection \( (-6,-3) \) into the reflection formula: \[ x' = 2(-6) - (-5) = -12 + 5 = -7 \] \[ y' = 2(-3) - (-8) = -6 + 8 = 2 \] Therefore, the coordinates of point \( B \) are \( (-7, 2) \).

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The coordinates of point \( B \) are \( (-7, 2) \).
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