Question

Each set of three points is collinear. find each missing x- or y-value. enter each answer to the nearest hundredth. (2, 3.37,), (10, 23.37), (6, y)

Answer 1

Colinear means they're on the same line, so they have the same gradient, gradient is rise/run. 
the rise is 23.37-3.37 = 20
the run is 10 - 2 = 8
gradient = 20/8 = 2.5

(y-3.37)/(6-2) = 2.5
(y-3.37)/4 = 2.5
(y-3.37) = 4*2.5
y - 3.37 = 10
y = 13.37