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Math

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The coordinates of the vertices of triangle ABC are A (-5,1), B (-2,3) and C (-4,7). The triangle is reflected over the line x=2. What is the sum of the x-coordinates of points A', B' and C'(the points after the reflection)?

  • Math - ,

    The y values will not change,
    the new x value will be 2 + (2-oldx)

    eg A(-5,1) will become A'(2+(2+5),1) or A'(9,1)

    Find B' and C', then add up the x-coordinates.

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