To solve the problem, we need to find the distance between the two given points: \( (4, -8) \) and \( (5, -2) \).
1. Understanding the Distance Formula:
The distance \(d\) between two points \( (x_1, y_1) \) and \( (x_2, y_2) \) is given by:
\( d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \)
2. Substituting the Values:
Here, \( x_1 = 4, y_1 = -8, x_2 = 5, y_2 = -2 \)
So,
\( d = \sqrt{(5 - 4)^2 + (-2 - (-8))^2} \)
3. Simplifying the Expressions:
\( d = \sqrt{(1)^2 + (6)^2} \)
\( d = \sqrt{1 + 36} \)
4. Final Calculation:
\( d = \sqrt{37} \)
Final Answer:
The distance between the points is \( \sqrt{37} \)
The points \( (K, 2 - 2K), (-K + 1, 2K) \) and \( (-4 - K, 6 - 2K) \) are collinear if:
(A) \( K = \frac{1}{2} \)
(B) \( K = -\frac{1}{2} \)
(C) \( K = \frac{3}{2} \)
(D) \( K = -1 \)
(E) \( K = 1 \)