Final answer:
To find the x-coordinate of a point on the line, substitute a y-coordinate of 0 into the equation and solve for x.
Step-by-step explanation:
To find the x-coordinate of a point on the line defined by the equation y = x - 6, we need to substitute a y-coordinate of 0 into the equation and solve for x.
Substituting y = 0 into the equation gives us 0 = x - 6. Adding 6 to both sides of the equation gives x = 6. Therefore, the x-coordinate of the point on the line with a y-coordinate of 0 is 6.