Question

Are the following lines parallel, perpendicular, or neither? -4x-5y=-4 and 10x-8y=-1

Answer 1

They are neither parallel nor perpendicular as they have different slopes.

First line equation in form of y = mx +c is:

y = (4x-4)/5

and second line equation is :

y= -((10x+1)/8)

Answer 2

perpendicular