Question

Karen plotted the route of a city tour bus on a coordinate grid. It shows the route as a quadrilateral with vertices at J(1, 1), K(2, 9), L(10, 8), and M(9, 0).

Which statement about the bus route is true?
It is a square of side length 1 unit.

It is a square of side length units.

It is a square of side length units.

It is a square of side length 8 units.

Answer 1

Hint:
The distance between two point A and B
\[
AB=\sqrt{(x_A-x_B)^2+(y_A-y_B)^2}
\]Where \[x_A\]Is the x-coordinate of point A, without loss of generality.