Question

Decide whether the pair of lines is parallel, perpendicular, or neither.

3x - 6y = -1 and 18x + 9y = -14

Group of answer choices

Parallel

Perpendicular

Neither

Answer 1

perpendicular

Explanation:

Let's find the slope of both lines

For line 3x-6y=-1

-6y=-1-3x

y=1/6+½x

m=½

For line 18x+9y=-14

9y=-14-18x

y=-14/9-2x

m=-2

m1•m2=½×-2=-1

since m1•m2=-1 the lines are perpendicular

Answer 2

perpendicular

Explanation:

perpendicular because m1×m2=-1