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The directed line segment from [tex]\( L \)[/tex] to [tex]\( N \)[/tex] has endpoints [tex]\( L(-6,2) \)[/tex] and [tex]\( N(5,-3) \)[/tex]. What are the [tex]\( x \)[/tex]- and [tex]\( y \)[/tex]-coordinates of point [tex]\( M \)[/tex], which partitions the directed line segment into the ratio 2:5?

[tex]\( x = -\frac{20}{7} \)[/tex]

[tex]\( y = \frac{4}{7} \)[/tex]


Sagot :

To determine the coordinates of point [tex]\( M \)[/tex] that divides the directed line segment from [tex]\( L \)[/tex] to [tex]\( N \)[/tex] in the ratio 2:5, you can use the section formula for internal division.

The section formula is given by:
[tex]\[ \left(\frac{k \cdot x_2 + m \cdot x_1}{k + m}, \frac{k \cdot y_2 + m \cdot y_1}{k + m}\right) \][/tex]

Here, [tex]\( L \)[/tex] and [tex]\( N \)[/tex] are endpoints with coordinates:
[tex]\[ L(x_1, y_1) = (-6, 2) \][/tex]
[tex]\[ N(x_2, y_2) = (5, -3) \][/tex]

The ratio [tex]\( k:m = 2:5 \)[/tex], so [tex]\( k = 2 \)[/tex] and [tex]\( m = 5 \)[/tex].

Now let's calculate the coordinates of [tex]\( M \)[/tex]:

### Calculation for the [tex]\( x \)[/tex]-coordinate:
[tex]\[ M_x = \frac{k \cdot x_2 + m \cdot x_1}{k + m} = \frac{2 \cdot 5 + 5 \cdot (-6)}{2 + 5} \][/tex]
[tex]\[ M_x = \frac{10 - 30}{7} = \frac{-20}{7} = -2.857142857142857 \][/tex]

### Calculation for the [tex]\( y \)[/tex]-coordinate:
[tex]\[ M_y = \frac{k \cdot y_2 + m \cdot y_1}{k + m} = \frac{2 \cdot (-3) + 5 \cdot 2}{2 + 5} \][/tex]
[tex]\[ M_y = \frac{-6 + 10}{7} = \frac{4}{7} = 0.5714285714285714 \][/tex]

Therefore, the coordinates of point [tex]\( M \)[/tex] which partitions the directed line segment from [tex]\( L \)[/tex] to [tex]\( N \)[/tex] in the ratio 2:5 are:
[tex]\[ M \left( -2.857142857142857, 0.5714285714285714 \right) \][/tex]