Find the area of the triangle with the vertices (2,1), (10,-1),
and(-1,8).

The area of triangle is 25 square units.

Step-by-step explanation:

Given information: Vertices of the triangle are (2,1), (10,-1), and (-1,8).

Formula for area of a triangle:

The given vertices are (2,1), (10,-1), and (-1,8).

Using the above formula the area of triangle is

On further simplification we get

Therefore the area of triangle is 25 square units.

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

x=0

step-by-step explanation: