Question

Find the distance between (-3,5) and (-9,5).

Answer 1

6 units

Explanation:

Distance between 2 points

`= \sqrt{(x1 - x2)^(2) + (y1 - y2)^(2) }`

Thus, distance between (-3, 5) and (-9, 5)

`= \sqrt{( - 3 - ( - 9))^(2) + (5 - 5)^(2) } \\ = \sqrt{( - 3 + 9)^(2) } \\ = \sqrt{6 ^(2) } \\ = 6`

Alternatively, notice that this line is a horizontal line as both points have the same y-coordinate of 5.

Thus, distance between the 2 points

= -3 -(-9)

= -3 +9

= 6 units