Question

Are the below pairs of lines parallel, perpendicular, or neither?

9x+12y = 8 and 6x+8y = −1

Parallel

Perpendicular

Neither

Answer 1

They are parallel to eachother

Answer 2

9x + 12y = 8
12y = -9x + 8
y = - 3/4x + 2/3....slope here is -3/4, y int is 2/3

6x + 8y = -1
8y = -6x - 1
y = - 3/4x - 1/8...slope here is -3/4, y int is -1/8

same slope, different y intercepts means parallel lines