Question 979152
{{{y - (1/4) x - 2 = 0}}}

Change to slope-intercept form: 

 {{{y = (1/4)x + 2}}}

find two points that lie on a line and graph a line:

{{{x}}}|{{{y}}}
{{{0}}}|{{{2}}}
{{{-8}}}|{{{0}}}   

{{{ graph( 600, 600, -10, 10, -10, 10, (1/4)x + 2) }}}


You can see a triangle on you graph, formed by your line, and the {{{x}}} and {{{y}}} axes. The line crosses the {{{y}}} axis at {{{2}}}, and the {{{x}}} at {{{-8}}}. 
The length along the {{{x}}} axis is {{{adjacent}}} to the angle you want, the line along {{{y}}} is {{{opposite}}}. 

So you can say

{{{tan (angle) =2/8}}} (the signs don't matter once you've found your triangle) so
{{{angle =tan^-1 (1/4)}}}

{{{angle =14.04}}}°