Answer:
8
Explanation:
Let the equation of the function represented by the table is,
y - y' = m(x - x')
Where m = slope of the line
(x', y') is a point lying on the line.
Since, slope of a line passing through
and
is,
m =

Therefore, slope of a line passing through (18, 26) and (35, 43) is,
m =

= 1
Therefore, equation of the line passing through (18, 26) and slope 1 will be,
y - 26 = 1(x - 18)
y = x - 18 + 26
y = x + 8
Therefore, missing term of the equation is 8.