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A directed line segment begins at [tex]F(-10,-4)[/tex] and ends at [tex]H(8,4)[/tex]. It is divided in the ratio 6 to 2 by [tex]G[/tex].

What are the coordinates of [tex]G[/tex]?

A. [tex](2.5, 2)[/tex]
B. None of the other answers are correct
C. [tex](3.5, 2)[/tex]
D. [tex](3.3, 5)[/tex]
E. [tex](-1.6, 5)[/tex]

Sagot :

To find the coordinates of point [tex]\( G \)[/tex] which divides the directed line segment [tex]\( \overline{FH} \)[/tex], we use the section formula. The section formula helps determine a point that divides a line segment in a given ratio, either internally or externally. In this case, the ratio given is [tex]\( 6 : 2 \)[/tex].

Given points:
[tex]\[ F(-10, -4) \][/tex]
[tex]\[ H(8, 4) \][/tex]

And the ratio [tex]\( m : n = 6 : 2 \)[/tex].

The section formula for internal division is:
[tex]\[ G = \left( \frac{m \cdot x_2 + n \cdot x_1}{m + n}, \frac{m \cdot y_2 + n \cdot y_1}{m + n} \right) \][/tex]

Substituting the given values:
[tex]\[ x_1 = -10, \quad y_1 = -4 \][/tex]
[tex]\[ x_2 = 8, \quad y_2 = 4 \][/tex]
[tex]\[ m = 6, \quad n = 2 \][/tex]

First, we find the sum of the ratio terms:
[tex]\[ m + n = 6 + 2 = 8 \][/tex]

Now we calculate the x-coordinate of [tex]\( G \)[/tex]:
[tex]\[ G_x = \frac{(6 \cdot 8) + (2 \cdot -10)}{8} = \frac{48 + (-20)}{8} = \frac{28}{8} = 3.5 \][/tex]

Next, we calculate the y-coordinate of [tex]\( G \)[/tex]:
[tex]\[ G_y = \frac{(6 \cdot 4) + (2 \cdot -4)}{8} = \frac{24 + (-8)}{8} = \frac{16}{8} = 2.0 \][/tex]

Therefore, the coordinates of point [tex]\( G \)[/tex] that divides the segment [tex]\( \overline{FH} \)[/tex] in the ratio 6:2 are:
[tex]\[ G = (3.5, 2.0) \][/tex]

Thus, the correct answer is:
[tex]\[ \boxed{(3.5, 2)} \][/tex]