On a map of Blueville in the standard (x,y) coordinate
plane, where I coordinate unit represents 1 block, the
middle school is at (-8,3) and the high school is at
(4,-2). What is the straight-line distance, in blocks,
between the high school and the middle school?
A. 13
B. 17
c. square root of 7
D. square root of 13
E. square root of 17

Respuesta :

Option A: 13 is the distance between the high school and the middle school

Explanation:

Given that the middle school is at (-8,3) and the high school is at (4,-2)

We need to determine distance in blocks between the high school and the middle school.

Distance:

The distance between the high school and the middle school can be determined using the distance formula,

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

Let us substitute the coordinates (-8,3) and (4,-2) in the above formula, we have,

[tex]d=\sqrt{(4+8)^2+(-2-3)^2}[/tex]

Simplifying the values, we have,

[tex]d=\sqrt{(12)^2+(-5)^2}[/tex]

Squaring the terms, we get,

[tex]d=\sqrt{144+25}[/tex]

Adding, we get,

[tex]d=\sqrt{169[/tex]

[tex]d=13[/tex]

Thus, the distance between the high school and the middle school is 13 blocks.

Hence, Option A is the correct answer.