Question

What is the equation of a line that is parallel to the line that is given by the equation x = -4?

a) y = x - 4
b) x = (-y/4)
c) y = (1/4x)
d) x = (-1/4)

Answer 1

Heyyy! Remember that parallel lines have the same slope!

Answer 2

but the slope is undefined

Answer 3

However, you should note that the equation x = -4 is a vertical line! Exactly ^^

Answer 4

Literally any vertical line will be parallel to the equation x = -4

Answer 5

Which one do you think it is? :)

Answer 6

so its a linear equation?

Answer 7

don't those have to pass the vertical line test?

Answer 8

Nope! The question is simply asking for a line parallel to x = -4, so it doesn't necessarily have to pass the vertical line test.

Answer 9

And vertical lines aren't considered linear!

Answer 10

okay so would it be a?

Answer 11

nooope! That is linear!

Answer 12

vertical lines start with x=

Answer 13

i feel like its either a or b... those look like they make sense to me

Answer 14

And vertical lines can't have a y variable in it! Which can it be?

Answer 15

d?

Answer 16

@steve816

Answer 17

YUP!

Answer 18

That is right :)

Answer 19

okay thank you!

Answer 20

No problem!

Answer 21

x=k,where k can be any value.
k is a real number.