The equation `y^(2)-x^(2)+2x-1=0`, represents

Options

A. a pair of striaght lines
B. a parallel straight lines
C. a perpendicular straight lines
D. None of the above

Answer

C

Explanation

We have , `y^2-x^2+2x-1=0`
`rArr y^2-(x-1)^2=0`
`rArr (y+x-1)(y-x+1)=0`
`rArr y+x-1=0,y-x+1=0`
Hence , the given equation , represent a pair of perpendicular straight lines .