Question

write the equation of a line parallel to x-axis at a distance of 6 units below x-axis

Answer 1

To find the equation of x-axis and of a line parallel to x-axis:

Let AB be a straight line parallel to x-axis at a distance b units from it.

All points in the line AB have same ordinate b.

AB are considered as locus of a point in distance b from x-axis.

All points on the line AB satisfy the condition y = b.