Answer: The equation is (y=x+6)
Explanation:
Lets assume the equation to be y=mx+c,
where,
m=slope of the line
c=constant
Since we know that,
slope=m=tanx
where x is the angle between x-axis and line
tanx=

so here it will be,

Also, c=6 as we can clearly see from the graph
Therefore the equation of line is => y= x +6