PLEASE HELP, WILL GIVE A MEDAL AND A FAN :)
Determine if the triangle with the following vertices is a right triangle.

A(-3, 5), B(1, 4), and C(-1, 0).

Tell whether or not the triangle is a right triangle. Explain how you arrived at your answer.

Question

PLEASE HELP, WILL GIVE A MEDAL AND A FAN :)
Determine if the triangle with the following vertices is a right triangle.

A(-3, 5), B(1, 4), and C(-1, 0).

Tell whether or not the triangle is a right triangle. Explain how you arrived at your answer.

anonymous · Answer

find the slope of lines AB, AC and BC

tabdo1226 · Answer

http://openstudy.com/study#/updates/552c68c7e4b0cd3d4ea8e917 need help please i will help you guys

anonymous · Answer

$$m=\frac{ y_1-y_2 }{ x_1-x_2 }$$ slope formula

anonymous · Answer

So, I did the first two sets, A(-3, 5), B(1, 4) and got -1/4. Is that right? @ksanka

anonymous · Answer

Slope AB is -1/4.  If you graph the triangle, the only two sides that look like they might be at a right angle are sides AB and CB. 

So now you have to find the slope of CB.

After you have found the slope for CB, multiply it by the slope of AB (-1/4). If you get -1 as your result, then the two sides form a right angle.