Question

Calculate the distance between A (7, 3) and B on the x-axis, whose abscissa is 11.

Answer 1

Here B is (11, 0)

AB = `sqrt((11 − 7)^2 + (0 − 3)^2)`

= `sqrt((4)^2 + (−3)^2)`

= `sqrt(16 + 9)`

= `sqrt(25)`

= 5 units.