Question

Determine whether the lines are parallel, perpendicular, or neither.
x+2y=-3
6x+6y=0

Answer 1

We solve for y in each of them to get
y=-x/2 - 3/2
y = -x
Now is it clearer to see if the lines are parallel, perpendicular, or neither?

Answer 2

parallel?

Answer 3

No. Now that we have the lines in slope-intercept form, we can easily see the slope as -1/2 for the first line, and -1 for the second line.Since these aren't equal, the lines aren't parallel. Also, they aren't perpendicular because their reciprocals aren't equal. Thus, they are
Neither.

Answer 4

you should multiply vectors

Answer 5

the result of multiply is 18