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nycmathdad

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terms of x_1, y_1, x_m, and y_m.

54. Use the result of Exercise 53 to find the endpoint (x_2, y_2) of each line segment with the given endpoint (x_1, y_1) and midpoint (x_m, y_m).

(a) (x_1, y_1) = (1, −2)

(x_m, y_m) = (4, −1)

(b) (x_1, y_1) = (−5, 11)

(x_m, y_m) = (2, 4)

I need help with 53 and 54.