Answer:
Affix: 'in-' and '-ible'
The affix 'in-' meaning 'not' is employed to derive the antonym of the word 'flexible' and '-ible' meaning 'able to be' help form the word 'flexible'.
Explanation:
Affixes are described as the morphemes that are added either at the beginning or at the end of a root word to derive new words from them.
In the given word 'inflexible', two affixes are employed to modify the meaning of the root word 'flex'. The suffix '-ible' implying 'capable to be' is added to it to form the word 'flexible' meaning 'capable of being bent or flexed' while another affix 'in-' meaning 'not' which is a prefix here is employed at the beginning of the word 'flexible' to derive the word 'inflexible' implying 'not capable of being flexible'.
