9th grade geometry help:
Middle from the points A(6, 5) and B(– 4, 3). point which lies on the y-axis?
Solution:
Y-axis is of the form (0, y). So, let the point
P (0, y) be equidistant from A and B.
(6– 0)2 + (5 – y)2 = (– 4 – 0)2 + (3 – y)2
36 + 25 + y2 – 10y = 16 + 9 + y2 – 6y
4y=36
Y=9
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