given a point A(x,y) such that x+y=7,y-x=1 then A lies in quadrant no
Answers
Given : a point A(x,y) such that x+y=7,y-x=1
To Find : A lies in which quadrant
Solution:
x + y = 7
y - x = 1
Adding both
=> x + y + y - x = 7 + 1
=> 2y = 8
=> y = 4
Substituting in x + y = 7
=> x + 4 = 7
=> x = 3
Hence point A is ( 3 , 4)
so point A lies in first Quadrant
A point P(x , y)
lies in Quadrant I if x and y both are positive
lies in quadrant II if x is - ve and y is + ve
lies in Quadrant III if x and y both are negative
lies in quadrant IV if x is + ve and y is - ve
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