What is the general form of the points which lie on X-axis?

What is the equation of the locus of a point which moves such that 4 times its distance from the x axis is the square of its distance from the origin?

Find the general equation of the line which is parallel to 3x-4y+5 = 0 . Also find such line through the point (-1,2)

The general form of a two digit number 93

Find the general equation of the line which is perpendicular to x+y+4=0 . Also find such line through the point (1,2)

The General form of a three digit number 256

What is the abscissa of all the points on y - axis ?

The length of the diameter of the circle which touches the x-axis at the point (1, 0) and passes through the point (2, 3) is:

Write the general form of a quadratic polynomial and cubic polynomial in variable x.