Chapter 1: Orienting Yourself: The Use of Coordinates

Exercise

Question

Question: 1 (ii)

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Fig 1.3 shows Reiaan's room with points OABC marking its corners. The x- and y-axes are marked in the figure. Point O is the origin.

Referring to Fig. 1.3, answer the following questions:

(ii) What are the coordinates of D1?

Coordinate plane showing Reiaan's room with the x-axis, y-axis, origin O, and labelled points D1, R1, B1, and B2.
Fig. 1.3: Coordinate plane showing Reiaan's room.

Answer

1
Read the x-coordinate and y-coordinate of D1 from the axes.
Answer: D1 = (8, 0)
Reason: Point D1 is 8 units to the right of the y-axis, so its x-coordinate is 8. It lies on the x-axis, so its y-coordinate is 0.
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