What’s the correct answer for this?

FIRST option is the correct answer

Step-by-step explanation:

First option is the correct answer.

Equating it with:

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

-7/8

step-by-step explanation:

instead of subtracting you add the -6/8 and -1/8