Question 1000601
The description can help to form a simple data table for two linear points.
<pre>
x           y
1.5         94
1.5+2.5     94-42
</pre>
These are points,  (1.5,94) and (3,52).


A neat way to setup the equation is to use both formula for slope and the linear equation in point-slope form using the second point:


{{{highlight_green(y-52=((52-94)/(3-1.5))(x-3))}}}


Simplify from there into general form.