Question

If A(-1;10) B(0 ;-1) C (-3;2) ,determine whether AB is perpendicular to AC​

Answer 1

No, they aren't perpendicular

Explanation:

Two lines are perpendicular if the product of their slope is - 1. The slope of line AB=(-1-10)/(0-(-1))=-11 and the slope of the line AC=(2-10)/(-3-(-1))=4. Since the product of their slope isn't - 1. They aren't perpendicular.