INTERCEPT(known_y's,known_x's)
INTERCEPT , .
@known_x @known_y , INTERCEPT #N/A!. @known_x = 0, INTERCEPT #DIV/0!.
Excel.
, A1, A2, ..., A5 11.4, 17.3, 21.3, 25.9 40.1, B1, B2, ... B5 -- 23.2, 25.8, 29.9, 33.5 42.7.
INTERCEPT(A1:A5,B1:B5) -20.785117212.
FORECAST, TREND.