The inverse of the relation y=9x-4 can be obtained graphically by...

The inverse of the relation y=9x-4 can be obtained graphically by...
A) a reflection in the line y=(1/2)x
B) a reflection in the line y=2x
C) a reflection in the line y=x
D) a reflection in the x-axis

( c ) a reflection in the line y = x