Question

4.(03.07)

Which of the following lines is parallel to x = 8?

(2 points)
A- 3y = 16

B- x = 7

C- x = y

D- y = 8

Answer 1

B is parallel to x = 8

Answer 2

B.

Explanation:

The given line is

`x=8`

It's important to know that all lines that have the form
`x=k`, where
`k` real number, then taht line is vertical. And all lines that have the form
`y=k`, are horizontal lines.

So, we just need to find the choice that has the form
`x=k`, which is option B.

Therefore,
`x=7` is parallel to
`x=8`, because both of them are vertical lines, that is, they both have 90° as angle of inclination.