Answer:
a is perpendicular to both b and c; the product of the slopes a and b or a and c is -1
Step-by-step explanation:
perpendicular slopes multiplied by each other would be -1
-1/3 * 3 for a and both other lines is -1
that means a is perpendicular to both b and c
(1, 2)
x2-x1/2, y2-y1/2
Plug in the values, and you should get (1, 2)
Volume for cube: L x W x H
L= Length, W= width, H=height
