Question

Are the lines –7x – 8y = 0 and –7x – 8y = –3 parallel, perpendicular, or neither?

Answer 1

Put each of those equations in slope intercept form: y = mx + b
If your m's are the same, they're parallel.
If your m's are negative reciprocal's, they're perpendicular.
Otherwise, they're neither.
Questions?

Answer 2

you figure it out yet ? BankokGarrett explained it very well.