Question

Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.

y = -4x + 3
-2x + 8y = 5

Answer 1

Put in form y = mx +b
Parallel lines have same m
Perpendicular lines have slopes m and -1/m

Answer 2

put the second equation in to y =mx+b
m being as the slope
if they have the same slope then they are parallel
if the slopes are inverse and have different signs, then they are perpendicular