Math Problem Statement

What are the coordinates of the point 14

of the way from A(–6, –3) to B(10, 9)?

Solution

To find the coordinates of the point that is 14\frac{1}{4} of the way from point A(6,3)A(-6, -3) to point B(10,9)B(10, 9), we can use the formula for the coordinates of a point dividing a line segment in a given ratio.

The formula is:

P(x,y)=(x1+mm+n(x2x1), y1+mm+n(y2y1))P(x, y) = \left( x_1 + \frac{m}{m+n}(x_2 - x_1), \ y_1 + \frac{m}{m+n}(y_2 - y_1) \right)

Where:

  • A(x1,y1)=(6,3)A(x_1, y_1) = (-6, -3)
  • B(x2,y2)=(10,9)B(x_2, y_2) = (10, 9)
  • The ratio is 1:31:3, because 14\frac{1}{4} means the point is 11 part of the way from AA to BB, and 33 parts away from BB.

Now, apply this formula:

P(x,y)=(6+14(10+6), 3+14(9+3))P(x, y) = \left( -6 + \frac{1}{4}(10 + 6), \ -3 + \frac{1}{4}(9 + 3) \right)

Simplifying the expression:

P(x,y)=(6+14(16), 3+14(12))P(x, y) = \left( -6 + \frac{1}{4}(16), \ -3 + \frac{1}{4}(12) \right) P(x,y)=(6+4, 3+3)P(x, y) = \left( -6 + 4, \ -3 + 3 \right) P(x,y)=(2,0)P(x, y) = (-2, 0)

So, the coordinates of the point 14\frac{1}{4} of the way from AA to BB are (2,0)(-2, 0).

Would you like more details or further explanation?

Here are some related questions:

  1. What is the midpoint between two points?
  2. How do you find the point dividing a segment in any given ratio?
  3. How do you calculate the distance between two points in a plane?
  4. What is the section formula for internal division?
  5. How do you handle ratio problems when the point divides externally?

Tip: Always remember that the section formula changes for external division, using a negative sign for the ratio when the point lies outside the segment.

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Section Formula
Ratios

Formulas

Section formula for internal division: P(x, y) = (x1 + m/(m+n)(x2 - x1), y1 + m/(m+n)(y2 - y1))

Theorems

Section formula for dividing a line segment in a given ratio

Suitable Grade Level

Grades 8-10