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# SSC CGL MAINS – REFLECTION in Coordinate Geometry Study Material SSC CGL MAINS

REFLECTION in Coordinate Geometry Study Material

In 2017, SSC asked reflection in coordinate geometry questions in CGL 17 PRE & MTS 16 Online Exams. So, its quite probable that SSC will ask reflection in coordinate geometry questions in CGL 17 Mains.

Some insights on Reflection in Coordinate Geometry Topic Common Reflections

• Reflection over y=x: if (x,y) is reflected over the line y=x, then the image is (y,x) (y,x).
• Reflection over y=b: if (x,y) (x,y)is reflected over the horizontal line y=b, then the image is (x,2b-y)(x,2by).
• Reflection over  x=a: if (x,y)  (x,y)is reflected over the vertical line  x=a x=a, then the image is (2a-x, y)y).
• Reflection over the  x-axis: if (x,y)  is reflected over the  x-x−axis, then the image is (x,-y) (x,−y).
• Reflection over the y-axis:If ((x,y)  x,y) is reflected over the  y-−axis, then the image is (-x,y) (−x,y).
• Reflection over y=-xy=−x:If  (x,y)  is reflected over the line y=-x y=−x, then the image is (-y,-x).
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