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hernandezramirp2pjmh
25.10.2019 •
Mathematics
The endpoints of cd are c(–8, 4) and d(6, –6). what are the coordinates of point p on cd such that p is the length of the line segment from d? (–2.75, 0.25) (–5, 2.5) (0.75, –2.25) (3.75, –3.75)
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Ответ:
Using the endpoints find the slope (change in y/ change in x) then substitute a point in to find the intercept.
Slope = (-6-4)/(6- -8) = -5/7
Intercept equation (-6) = -5/7 (6) + b
b = -1.71428571429
Graphing the line shows only 2 points on the line (–2.75, 0.25) and (0.75, –2.25)
I am confused by the part, "P is the length of the line segment from D". Were you given a length P to help you determine which point. Using the distance formula to find the length from each point to D doesn't help determine which one is best with the information you have given. The image shows the distances I calculated and the graphed points.
I hope this helps!
Ответ:
4.5 • 5 = 22.5
32- 22.5 = 9.5, a is not enough
35- 22.5 = 12.5, c & d are too high