Question

What is the distance between (2, -1) and (-1,-5) on the coordinate plane?

7 units
6 units
5 units
4 units

Answer 1

5 units

Explanation:

Let the two points be A and B

A(2,-1), B(-1,-5)

Where x1=2, x2=-1, y1=-1, y2= -5

Distance formula=√(x2-x1)^2+(y2-y1)^2

Distance formula=√(-1-2)^2+(-5+1)^2

=√(-3)^2+(-4)^2

=√9+16

=√25

=5 units

Answer 2

5 units

Explanation:

Let the two points be A and B

A(2,-1), B(-1,-5)

Where x1=2, x2=-1, y1=-1, y2= -5

Distance formula=√(x2-x1)^2+(y2-y1)^2

Distance formula=√(-1-2)^2+(-5+1)^2

=√(-3)^2+(-4)^2

=√9+16

=√25

=5 units