A graph shows four quadrants with the x-axis and y-axis both ranging from negative 5 to positive 5 in increments of 1. Unlabeled data points marked are at left parenthesis negative 2 comma negative 1 right parenthesis, and at left parenthesis 2 comma 4 right parenthesis. A straight line joins the two lines with a positive slope.

Apply the Pythagorean Theorem to find the length between the two points. Round your answer to the nearest hundredth, if necessary.

(1 point)
Responses

6:40
6:40

9
9

5.57
5.57

41

1 answer

To find the length between the two points \((-2, -1)\) and \((2, 4)\), we can use the distance formula, which is derived from the Pythagorean theorem:

\[ d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} \]

In this case, the coordinates are:

  • \((x_1, y_1) = (-2, -1)\)
  • \((x_2, y_2) = (2, 4)\)

Now, substitute the values into the distance formula:

\[ d = \sqrt{(2 - (-2))^2 + (4 - (-1))^2} \]

Calculate the differences:

\[ d = \sqrt{(2 + 2)^2 + (4 + 1)^2} \] \[ d = \sqrt{(4)^2 + (5)^2} \] \[ d = \sqrt{16 + 25} \] \[ d = \sqrt{41} \]

Now, let's round \(\sqrt{41}\). The square root of 41 is approximately 6.403124237...

Rounding this to the nearest hundredth gives:

\[ d \approx 6.40 \]

Thus, the length between the two points, rounded to the nearest hundredth, is \(6.40\).

The correct response is: 6:40