a point (x+2,x+4)lies in the first quaderent the mirror image for which for x-axis is (5,-7)what is the value of x ?
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shallukathuria0123
shallukathuria0123
27.04.2020
Math
Secondary School
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A point x + 2 and X + 4 lies in first quadrant of cartesian plane The Mirror image for which 4 x axis is 5 ,- 7 what is the value of x?
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amitnrw
amitnrw Genius
Given : A point ( x + 2 , x + 4) lies in first quadrant of cartesian plane . Mirror image for x axis is (5 , - 7)
To find : the value of x
Solution:
Given point x + 2 , x + 4 lies in 1st Quadrant
Let say point is ( A , B) Where A & B are + ve as they lie in 1st Quadrant
A = x + 2
B = x + 4
Mirror image for x axis keep value of x axis same but for value of y sign get changes
=> mirror image point ( A , - B)
Mirror image = ( 5 , - 7)
=> A = 5 & B = 7
x + 2 = 5 => x = 3
or x + 4 = 7 => x = 3
Hence value of x = 7