Connect with experts and get insightful answers to your questions on IDNLearn.com. Find reliable solutions to your questions quickly and accurately with help from our dedicated community of experts.

Find point [tex]$R$[/tex] on the line segment [tex]$PQ$[/tex] that partitions it into the segments [tex]$PR$[/tex] and [tex]$RQ$[/tex] in the ratio 3:2.

A. [tex]$\left(\frac{14}{5},-\frac{7}{5}\right)$[/tex]
B. [tex]$\left(\frac{14}{5}, \frac{7}{5}\right)$[/tex]
C. [tex]$\left(\frac{6}{5}, \frac{2}{5}\right)$[/tex]
D. [tex]$\left(-\frac{6}{5}, \frac{2}{5}\right)$[/tex]


Sagot :

To find point [tex]\( R \)[/tex] on the line segment [tex]\( P Q \)[/tex] that partitions it into the segments [tex]\( P R \)[/tex] and [tex]\( R Q \)[/tex] in the ratio 3:2, we can use the section formula. Specifically, for two points [tex]\( P(x_1, y_1) \)[/tex] and [tex]\( Q(x_2, y_2) \)[/tex] and a ratio [tex]\( m:n \)[/tex], the coordinates of point [tex]\( R(x_R, y_R) \)[/tex] that divides the segment [tex]\( P Q \)[/tex] internally in the ratio [tex]\( m:n \)[/tex] are given by:

[tex]\[ x_R = \frac{m x_2 + n x_1}{m + n} \][/tex]
[tex]\[ y_R = \frac{m y_2 + n y_1}{m + n} \][/tex]

Here, point [tex]\( P \)[/tex] has coordinates [tex]\( (-1, 3) \)[/tex], point [tex]\( Q \)[/tex] has coordinates [tex]\( (4, -2) \)[/tex], and the ratio [tex]\( m:n \)[/tex] is 3:2.

First, let's determine the [tex]\( x \)[/tex]-coordinate [tex]\( x_R \)[/tex]:

[tex]\[ x_R = \frac{3 \cdot 4 + 2 \cdot (-1)}{3+2} \][/tex]
[tex]\[ x_R = \frac{12 - 2}{5} \][/tex]
[tex]\[ x_R = \frac{10}{5} \][/tex]
[tex]\[ x_R = 2 \][/tex]

Next, let's determine the [tex]\( y \)[/tex]-coordinate [tex]\( y_R \)[/tex]:

[tex]\[ y_R = \frac{3 \cdot (-2) + 2 \cdot 3}{3+2} \][/tex]
[tex]\[ y_R = \frac{-6 + 6}{5} \][/tex]
[tex]\[ y_R = \frac{0}{5} \][/tex]
[tex]\[ y_R = 0 \][/tex]

Therefore, the coordinates of point [tex]\( R \)[/tex] are [tex]\( (2.0, 0.0) \)[/tex].

Since none of the provided answer choices match the coordinates [tex]\( (2.0, 0.0) \)[/tex], the correct response must be absent from the given options. However, based on our calculation, the correct coordinates of point [tex]\( R \)[/tex] that partitions [tex]\( P Q \)[/tex] into the ratio 3:2 are:
[tex]\[ \boxed{(2.0, 0.0)} \][/tex]