Question

The graphs of the two linear equations a x+b y=c and b x-a y=c, where a, b and c are all not equal to zero

Answer 1

Answer:

Step-by-step explanation:

ax +by =c

bx-ay =c

(ax+by) (bx-ay) =2c

ax+by *by - ax = 2c

Here( ax + by = c) or (by = - ax + c) or ( y = (- a/ b)x +( c/b)) provides slope (-a/b) and the second equation which is ( bx - ay =c)or ( -ay= - bx+c) or (y=( b/a)x -( c/ a)) provides slope (b/a). If we consider both slopes there product becomes (-1). Which is condition of two lines are perpendicular.so answer must be D.