a) The point (1, 15) is at 3 / 4 of the way from points R to S.
b) The point (- 3, 7) is at 1 / 4 of the way from points R to S.
In this problem we must determine the line segment ratio associated to a given point within a line segment, this can be found by using the line segment formula:
Q(x, y) = R(x, y) + k · [S(x, y) - R(x, y)]
Q(x, y) = (- 5, 3) + k · [(3, 19) - (- 5, 3)]
Q(x, y) = (- 5, 3) + k · (8, 16)
Q(x, y) = (- 5 + 8 · k, 3 + 16 · k)
Now we proceed to find each ratio:
Q(x, y) = (1, 15)
(1, 15) = (- 5 + 8 · k, 3 + 16 · k)
k = 3 / 4
The point (1, 15) is at 3 / 4 of the way from points R to S.
Q(x, y) = (- 3, 7)
(- 3, 7) = (- 5 + 8 · k, 3 + 16 · k)
k = 1 / 4
The point (- 3, 7) is at 1 / 4 of the way from points R to S.
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