To calculate the distance between points \( R(-4, -1) \) and \( S(1, 6) \), the best approach is to treat the line segment \( \overline{RS} \) as the hypotenuse of a right triangle and then apply the Pythagorean Theorem.
Here's a step-by-step breakdown of the process:
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Calculate the lengths of the legs of the right triangle:
- The horizontal leg (difference in x-coordinates): \( x_2 - x_1 = 1 - (-4) = 1 + 4 = 5 \)
- The vertical leg (difference in y-coordinates): \( y_2 - y_1 = 6 - (-1) = 6 + 1 = 7 \)
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Use the Pythagorean Theorem:
- According to the Pythagorean Theorem, \( c^2 = a^2 + b^2 \), where \( c \) is the hypotenuse (\( RS \)), and \( a \) and \( b \) are the other two legs of the triangle. Thus, \[ RS = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} = \sqrt{5^2 + 7^2} = \sqrt{25 + 49} = \sqrt{74} \]
Considering the responses provided, the correct choice describing this approach is:
Make \( \overline{RS} \) the hypotenuse of a right triangle and calculate the lengths of the triangle's legs on the coordinate plane. Then, use the Pythagorean Theorem to solve for the length of \( \overline{RS} \).