The slope - intercept form of a line equation is
.
Inclination and slope:
\If a non vertical line has inclination
and slope
, then
.
The line equation is
.
Write the equation in slope - intercept form.
\
Compare the line equation
with
.
The slope is
, then the inclination is

Conversion from radians to degrees:
\
The angle of inclination is
radians or
.
The angle of inclination is
radians or
.