Question

The coordinates of the point Rare (9, -9) and the coordinates of point S are

(9, 10). What if the distance, in units, between the point R and point S?

Answer 1

• RS = 19 units

Explanation:

Given points

• R(9, - 9) and S(9, 10)

Since both of the points have same x- coordinate of 9, the distance between the points is the absolute value of the difference of y-coordinates:

• RS = | - 9 - 10| = | - 19| = 19 units

Answer 2

Formula for length between coordinates is given as √(x1-x2)²+(y1-y2)², which x and y being the coordinates of the points.

Length of RS = √(9-9)²+(-9-10)²

= √0+(-19)²

= √361

= 19 units