Question

are these two lines parallel
y + 8 = -6x

-2x + y = 5

Answer 1

parallel lines have the same gradient

rearrange the equation so they will be in the form y = mx + c, where m is the gradient

y = -6x - 8
y = 2x + 5

as you can see, since they do not have the same gradient, they are not parallel lines