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madam [21]
2 years ago
8

If (4,-3) is the midpoint of the line segment ST and the coordinates of S are (1,5), find the

Mathematics
1 answer:
Klio2033 [76]2 years ago
3 0

Answer:

(7,-11)

Step-by-step explanation:

Given

S = (1,5)

M = (4,-3)

Required

Determine the coordinates of T

Midpoint is calculated as:

M(x,y) = \frac{1}{2}(x_1 +x_2,y_1+y_2)

Where:

(x,y) = (4,-3)

(x_1,y_1) = (1,5)

Substitute these values in the above formula:

(4,-3) = \frac{1}{2}(1 + x_2,5+y_2)

Multiply through by 2

2 * (4,-3) = 2 * \frac{1}{2}(1 + x_2,5+y_2)

(8,-6) = (1 + x_2,5+y_2)

By direct comparison:

1 + x_2 = 8 and 5 + y_2 = -6

Solving for x2

1 + x_2 = 8

x_2 = 8 - 1

x_2 = 7

Solving for y2

5 + y_2 = -6

y_2 = -6 - 5

y_2 = -11

Hence, the coordinates of T is: (7,-11)

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