Class 9 chapter number 4 exercise 4.3 question number 5
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Given : a graph
To find : Equation of line representing graph
Solution:
points on graph
(1 , - 1) , (0 , 0) & ( -1 , 1)
Slope of the line = ( 1 - 0)/(-1 - 0) = 1/(-1) = - 1
Equation of line as it passes through 0,0
y - 0 = -1(x - 0)
=> y = - x
=> x + y = 0
Option ii is correct
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