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Find the ratio in which point (3, 3) divides the line joining A(7, 1) and B(1, 4).

a. 1:3
b. 2:1
c. 3:2
d. 3:1

1 Answer

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Final answer:

To find the ratio in which point (3, 3) divides the line joining A(7, 1) and B(1, 4), we can use the concept of section formula. The ratio is approximately 4.5:3.2.

Step-by-step explanation:

To find the ratio in which point (3, 3) divides the line joining A(7, 1) and B(1, 4), we can use the concept of section formula. The section formula states that a point dividing a line segment in a ratio of m:n internally has coordinates given by:

x = (mx₁ + nx₂) / (m + n)

y = (my₁ + ny₂) / (m + n)

Using this formula, we can substitute the given values:

x = (3 * 7 + 1 * 1) / (3 + 1) = 5

y = (3 * 1 + 1 * 4) / (3 + 1) = 7/2

Therefore, the coordinates of the point where (3, 3) divides the line AB are (5, 7/2). To find the ratio, we can compare the distances of the point from the two given points.

AB = sqrt((7 - 1)² + (1 - 4)²) = sqrt(36) = 6

AP = sqrt((5 - 1)² + (7/2 - 4)²) = sqrt(20.25) = 4.5

PB = sqrt((7 - 5)² + (1 - 7/2)²) = sqrt(10.25) = 3.2

Since AP:PB is approximately 4.5:3.2, the ratio in which point (3, 3) divides the line AB is approximately 4.5:3.2.

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