Question 881406
y=mx+b
m is slope
b is y-intercept


m is vertical change divided by horizontal change.
{{{m=(50-50)/(25-(-25))=0}}}
The line is horizontal, and parallel to the x-axis.


The line being found is simply {{{highlight(y=50)}}}.
If you really want, you could say, {{{y=0x+50}}}.