IDNLearn.com: Your trusted platform for finding reliable answers. Whether it's a simple query or a complex problem, our community has the answers you need.

Line segment [tex]\( PQ \)[/tex] begins at [tex]\( P(6, -5) \)[/tex] and ends at [tex]\( Q(-2, 4) \)[/tex].

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 [tex]\( 3:2 \)[/tex].

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 the coordinates of the point [tex]\( R \)[/tex] that divides the line segment [tex]\( PQ \)[/tex] in the ratio [tex]\( 3:2 \)[/tex], we will use the section formula. The section formula states that if a point divides a line segment joining two points [tex]\((x_1, y_1)\)[/tex] and [tex]\((x_2, y_2)\)[/tex] in the ratio [tex]\( m:n \)[/tex], then the coordinates of the point are given by:

[tex]\[ \left( \frac{mx_2 + nx_1}{m+n}, \frac{my_2 + ny_1}{m+n} \right). \][/tex]

Given:
- [tex]\( P(6, -5) \)[/tex]
- [tex]\( Q(-2, 4) \)[/tex]
- Ratio [tex]\( m:n = 3:2 \)[/tex]

We will now apply the section formula step-by-step:

1. Identify [tex]\( x_1, y_1, x_2, y_2, m, \)[/tex] and [tex]\( n \)[/tex]:
- [tex]\( P_x = 6 \)[/tex]
- [tex]\( P_y = -5 \)[/tex]
- [tex]\( Q_x = -2 \)[/tex]
- [tex]\( Q_y = 4 \)[/tex]
- [tex]\( m = 3 \)[/tex]
- [tex]\( n = 2 \)[/tex]

2. Calculate the x-coordinate of [tex]\( R \)[/tex]:

[tex]\[ R_x = \frac{m Q_x + n P_x}{m + n} = \frac{3(-2) + 2(6)}{3 + 2} = \frac{-6 + 12}{5} = \frac{6}{5} = 1.2 \][/tex]

3. Calculate the y-coordinate of [tex]\( R \)[/tex]:

[tex]\[ R_y = \frac{m Q_y + n P_y}{m + n} = \frac{3(4) + 2(-5)}{3 + 2} = \frac{12 - 10}{5} = \frac{2}{5} = 0.4 \][/tex]

So, the coordinates of point [tex]\( R \)[/tex] are [tex]\( (1.2, 0.4) \)[/tex].

Based on the given options, none of the coordinates match [tex]\((1.2, 0.4)\)[/tex] directly. However, we have found the correct partitioning point through calculations and the answer is confirmed to be [tex]\( (1.2, 0.4) \)[/tex].
We greatly appreciate every question and answer you provide. Keep engaging and finding the best solutions. This community is the perfect place to learn and grow together. For dependable answers, trust IDNLearn.com. Thank you for visiting, and we look forward to assisting you again.