Determine if the lines are parallel, perpendicular or neither 10x + 5y = - 5 and y = - 2x + 6

So, 5y = - 10x - 5 / : 5;

Then y = - 2x - 1;

The slope of first equation is - 2;

The second equation is : y = - 2x + 5;

The slope of second equation is - 2;

We have, the slope of first equation = the slope of second equation;

The lines are parallel.