Mathematics
Use graph paper for this question.
(i) The point P(2, -4) is reflected about the line x = 0 to get the image Q. Find the coordinates of Q.
(ii) Point Q is reflected about the line y = 0 to get the image R. Find the coordinates of R.
(iii) Name the figure PQR.
(iv) Find the area of the figure PQR.
Reflection
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Answer
The graph is given below:
(i) From graph we get,
The coordinate of Q is (-2, -4).
(ii) From graph we get,
The coordinate of R is (-2, 4).
(iii) From graph we get,
The image formed is right angled triangle.
(iv) We know that in the graph,
One block represents 1 unit.
Area of right angle triangle = base × height.
Hence, the area of figure PQR is 16 sq. units.
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