Which of the following points has a distance of 10 from the point (−1, 2) ?(1 point) Responses (−1, −12) Left Parenthesis negative 1 comma negative 12 Right Parenthesis (−1, 10) Left Parenthesis negative 1 comma 10 Right Parenthesis (−11, 2) Left Parenthesis negative 11 comma 2 Right Parenthesis (10, 2)

1 answer

To find which point has a distance of 10 from the point \((-1, 2)\), we can use the distance formula, which is:

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

Where \((x_1, y_1)\) is the original point \((-1, 2)\) and \((x_2, y_2)\) is the point we are testing.

We want the distance \(d\) to equal 10:

\[ \sqrt{(x_2 + 1)^2 + (y_2 - 2)^2} = 10 \]

Squaring both sides, we have:

\[ (x_2 + 1)^2 + (y_2 - 2)^2 = 100 \]

Now, let's check each option:

  1. For the point \((-1, -12)\): \[ (-1 + 1)^2 + (-12 - 2)^2 = 0 + (-14)^2 = 196 \quad (\text{not } 100) \]

  2. For the point \((-1, 10)\): \[ (-1 + 1)^2 + (10 - 2)^2 = 0 + 8^2 = 64 \quad (\text{not } 100) \]

  3. For the point \((-11, 2)\): \[ (-11 + 1)^2 + (2 - 2)^2 = (-10)^2 + 0 = 100 \quad (\text{is } 100) \]

  4. For the point \((10, 2)\): \[ (10 + 1)^2 + (2 - 2)^2 = 11^2 + 0 = 121 \quad (\text{not } 100) \]

The only point that has a distance of 10 from \((-1, 2)\) is \((-11, 2)\).

Thus, the answer is \((-11, 2)\).