Final answer:
The distance between the points (-8,6.3) and (-8,5.4) is 0.9 units, as they lie on the same vertical line, and the distance is the absolute value of the difference between their y-coordinates.
Step-by-step explanation:
To find the distance between the pair of points (-8,6.3) and (-8,5.4), we observe that the points have the same x-coordinate. Therefore, they lie on a vertical line, and the distance between them is simply the difference in the y-coordinates.
The distance (D) can be calculated using the following formula:
D = |y2 - y1|
Where y2 = 5.4 and y1 = 6.3.
D = |5.4 - 6.3|
D = |-0.9|
D = 0.9
Therefore, the distance between the points is 0.9 units.