What is the slope of a line parallel to 10x - 5y = 8?

What is the slope of a line parallel to 4x + 2y = 5?

What is the slope of a line perpendicular to x - 3y = 9?

What is the slope of a line perpendicular to x - 5y = - 10?

What is the slope of a line parallel to 4x + y = - 1?

A) m = - 5

B) m = 2

C) m = - 3

D) m = - 4

E) m = - 2

Perpendicular linees have slopes that multiply to - 1

paralell lines have slopes that are the same

also

for ax+by=c

the slope is - a/b

so

10x - 5y = 8? slope is - 10/-5=2, paralell so slope of parallell line is also 2 (B)

4x + 2y = 5? slope is - 4/2=-2, paralell so slope of paralell line is also - 2 (E)

x - 3y = 9? slope is - 1/-3=1/3, perpendicular, so 1/3 times - 3=-1 (C)

x - 5y = - 10? slope is - 1/-5=1/5, perpendicular, so 1/5 times - 5=-1 (A)

4x + y = - 1? slope is - 4/1=-4, parallel so - 4 (D)

What is the slope of a line parallel to 10x - 5y = 8? B

What is the slope of a line parallel to 4x + 2y = 5? E

What is the slope of a line perpendicular to x - 3y = 9? C

What is the slope of a line perpendicular to x - 5y = - 10? A

What is the slope of a line parallel to 4x + y = - 1? D