For Fig. 1
(i) y = x
(ii) x + y = 0
(iii) y = 2x
(iv) 2 + 3y = 7x
For Fig. 2
(i) y = x + 2
(ii) y = x – 2
(iii) y = –x + 2
(iv) x + 2y = 6
NCERT Class 6 Mathematics Chapter 4
Page No. 74
Exercise 4.3
Question No. 5
From the choices given below, choose the equation whose graphs are given in Figures.
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Figure 1
x + y = 0 is the correct equation as it satisfies the points (-1, 1), (0, 0) and (1, -1).
Figure 2
y = -x + 2 is the correct equation as it satisfies the points (-1, 3), (0, 2) and (2, 0).