Question

Please please help!

The city is mapped on a coordinate grid with the origin being City Hall. The library is located at (-3, 9) and the school is located at 3, 1). How far is the library from the school?

A. 4.2 units
B. 3.6 units
C. 10 units
D. 5 units

Answer 1

C

Explanation:

Calculate the distance (d) using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (- 3, 9) and (x₂, y₂ ) = (3, 1)

d =
`√((3+3)^2+(1-9)^2)`

=
`√(6^2+(-8)^2)`

=
`√(36+64)`

`√(100)` = 10 → C