Question

Find the distance of a point (13 , -9) from another point on the line y = 0 whose abscissa is 1.

Answer 1

Point on the line y = 0 lies on x-axis given acscissa is 1.

∴ point is P (1 , 0)

Let (13 , -9) be point A

AP = `sqrt ((13 - 1)^2 + (-9-0)^2)`

`= sqrt (144 + 81)`

`= sqrt 225`

= 15 units