Question 786115
The x axis is a horizontal line.  The slope of a horizontal line is 0.  Parallel lines have the same slope.<P>
A line parallel to the x axis is another vertical line: y=a.  Since a point on this line is (2,5) a=2.  The line is y=5<P>
Here's another way to find it.<P>
y - y(1) = m(x-x(1)) is the slope point equation of a line with slope m and a point (x(1),y(1)).<P>
y - 5 = 0 (x-2)<P>
y-5 = 0<P>
y = 5