What is the equation of line passing through P(9,-9),Q(8,-8)and R(7,-7)
A) y=x
B) y - x=0
C) x = 2y
D) x+ y=0
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Answer:
D) x+y=0
Step-by-step explanation:
Substitute the given points in any one of the options and check which condition satisfies the condition.
In this case x+y=0 satisfies all the 3 points.
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