Question

Determine whether the graphs of the two equations are perpendicular.
x+2y=7
2x+4y=5
Yes or no?

Answer 1

no

Answer 2

so it will be easy to tell if we write both in y=mx+b form

so first line we have
x+2y=7
2y=-x+7
y=-x/2+7/2

second one we have
2x+4y=5
4y=-2x+5
y=-2x/4+5/4
y=-x/2+5/4

so the lines are parallel