Answer:

Step-by-step explanation:
Assuming this is a linear equation in the form of
, we can first solve for the slope using
, for these points, the slope would be
. Now we plug in the points to get the equation:
plugging in (7,5), we get
×
+ 
and solving for b, we get b = 
therefore, the equation of the line passing through (7,5) and (1,2) is
.
hope this helps!