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## Homework Statement

Line 1: x-3/3k+1=Y+6/2=Z+3/2K

Line 2: x+7/3=y+8/-2k=z+9/-3

## Homework Equations

Cross product and dot product

## The Attempt at a Solution

vector equation for line 1: (x,y,z)=(4,-4,-3)+k(3,0,2)

vector equation for line 2: (x,y,z)=(-4,-8,-12)+k(0,-2,0)

The product of (3,0,2)and (0,-2,0) is zero so they are perpendicular but i don't know how to find k