The required distance is the hypotenuse of a right triangle with sides of lengths [2 - (-1)] and [4 - (-3)] = 3 and 7 respectively. From the Pythagorean theorem, this distance is the square root of the sum of the squares of the lengths of each side, in this instance the square root of (9 + 49) or the square root of 58. There is no integral square root, but the decimal approximation is about 7.616 units.
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8.54
Answer: 1
If you mean points of (1, -2) and (-9, 3) then the distance is about 11 units using the distance formula
Points: (-1, -9) and (4, -2) Distance: (-1-4)2+(-9--2)2 = 74 and the square root of this is the distance which is about 8.602 to 3 decimal places
since you know of one points and the halfway point between the other point. just multiply the halfway point by 2 and this is the total distance between the two points.