Solution:
Solution
Velocity of object, $$\bar{v}_{ob} = 3 \hat{i} + 4 \hat{j} $$
Velocity of image $$\bar{v}_{image} = 3 \hat{i} - 4 \hat{j}$$
Relative velocity of image with respect to its object $$\bar{v}_{rel} \, = \, \bar{v}_{image} \, - \, \bar{v}_{ob} \, = \, (3 \hat{i} \, - \, 4 \hat{j}) \, - \, (3 \hat{i} \, + \, 4 \hat{j}) = -8 \hat{j} $$