Hi
Using the point-slope formula, 
(2,-4)and
(6, 0) m = -4/-4 = 1
Using the standard slope-intercept form for an equation of a line y = mx + b
where m is the slope and b the y-intercept.
y = 1*x + b |Using order pair Pt(6,0) to solve for b
0 = 6 + b
-6 = b y = x -6 is the equation of the Line
Written in Standard Form if that format is preferred... x-y = 6
