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Question

Suppose you are given a coordinate system. Determine the quadrant in which the following points lie:

(i) A(4, 5); (ii) B(−4, −5); (iii) C(4, −5).

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Solution

(i) From the point, we observe that i.e., both x and y are positive.

Thus, this point lies in quadrant I.

(ii) From the point, we observe that i.e., both x and y are negative.

Thus, this point lies in quadrant III.

(iii) From the point, we observe that i.e., x is positive and y is negative.

Thus, this point lies in quadrant IV.


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