Question

Give the slope of each line and determine whether the lines are parallel, perpendicular or neither.?
3x+5y=5
9x+15y=0

Answer 1

convert them into the form
y=mx+c
where m is slope and c is the constant

Answer 2

and for perpendicularity
check
m1*m2=-1
where m1= slope of 1st line
m2=slope of second line

Answer 3

m=-3/5; b=0, neither