Hi in my class we started diving into this cartesian system i have never heard if this and it seemed like no one else had eithier. I am about to take the final wenesday and have some questions i need to review. If you could help me with the problems below that would be awesome.

ALso i know this is some easy looking stuff but its really nothing i have worked with before

1.)The distance between the two points

and

is ?

2.)Find the distance between the two points,

and

3.)Plot the points

,

, and

. Notice that these points are vertices of a right triangle (the angle

is 90 degrees).

Find the distance between

and

:

Find the distance between

and

:

Find the area of the triangle

: