Experience the power of community-driven knowledge on IDNLearn.com. Join our Q&A platform to access reliable and detailed answers from experts in various fields.

You have an unverified email address. Please open settings to verify your communication details.

Coordinate Geometry Test Part Two

Module 04: Coordinate Geometry

Problem:

A point [tex]\( M \)[/tex] on a segment with endpoints [tex]\( X(1,-2) \)[/tex] and [tex]\( Y(10,3) \)[/tex] partitions the segment in a [tex]\( 5:1 \)[/tex] ratio. Find [tex]\( M \)[/tex]. You must show all work to receive credit. (10 points)


Sagot :

To find the coordinates of point [tex]\( M \)[/tex] that partitions the segment with endpoints [tex]\( X(1, -2) \)[/tex] and [tex]\( Y(10, 3) \)[/tex] in a [tex]\( 5:1 \)[/tex] ratio, we can use the section formula in coordinate geometry. Here are the detailed steps to solve this problem:

1. Identify the given points and the ratio:
- Endpoint [tex]\( X \)[/tex] has coordinates [tex]\( (x_1, y_1) = (1, -2) \)[/tex].
- Endpoint [tex]\( Y \)[/tex] has coordinates [tex]\( (x_2, y_2) = (10, 3) \)[/tex].
- The ratio for partitioning is [tex]\( m:n = 5:1 \)[/tex].

2. Write down the section formula:
The section formula for the coordinates of a point [tex]\( M(x_m, y_m) \)[/tex] dividing the segment [tex]\( XY \)[/tex] in the ratio [tex]\( m:n \)[/tex] is given by:

[tex]\[ x_m = \frac{m \cdot x_2 + n \cdot x_1}{m + n} \][/tex]
[tex]\[ y_m = \frac{m \cdot y_2 + n \cdot y_1}{m + n} \][/tex]

3. Substitute the values into the section formula:
- [tex]\( x_1 = 1 \)[/tex]
- [tex]\( y_1 = -2 \)[/tex]
- [tex]\( x_2 = 10 \)[/tex]
- [tex]\( y_2 = 3 \)[/tex]
- [tex]\( m = 5 \)[/tex]
- [tex]\( n = 1 \)[/tex]

Using these values, we can calculate each coordinate of [tex]\( M \)[/tex] separately:

4. Calculate the [tex]\( x \)[/tex]-coordinate ([tex]\( x_m \)[/tex]):

[tex]\[ x_m = \frac{5 \cdot 10 + 1 \cdot 1}{5 + 1} \][/tex]
[tex]\[ x_m = \frac{50 + 1}{6} \][/tex]
[tex]\[ x_m = \frac{51}{6} \approx 8.5 \][/tex]

5. Calculate the [tex]\( y \)[/tex]-coordinate ([tex]\( y_m \)[/tex]):

[tex]\[ y_m = \frac{5 \cdot 3 + 1 \cdot (-2)}{5 + 1} \][/tex]
[tex]\[ y_m = \frac{15 - 2}{6} \][/tex]
[tex]\[ y_m = \frac{13}{6} \approx 2.1666666666666665 \][/tex]

6. Write down the coordinates of point [tex]\( M \)[/tex]:
- Thus, the coordinates of point [tex]\( M \)[/tex] are approximately [tex]\( (8.5, 2.1666666666666665) \)[/tex].

Therefore, the point [tex]\( M \)[/tex] that partitions the segment [tex]\( XY \)[/tex] in a [tex]\( 5:1 \)[/tex] ratio has coordinates [tex]\( (8.5, 2.1666666666666665) \)[/tex].