Which one is NOT equivalent

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Ok a point t on a segment with endpoints d(1, 4) and f(7, 1) partitions the segment in a 2: 1 ratio. find t. you must show all work to receive credit.

Determine which postulate or theorem can be used to prove that lmn =nmo