Question

Which equation represents the vertical line passing through (1.-9)?

OA
OB
x=1
OC. y=-9
OD
y=1

Answer 1

`x=1`

Explanation:

The point is
`(1,-9)`. This means the value of
`x` is
`1` and value of
`y` is
`-9`.

Vertical line means that the point has the value of
`y` axis as zero
`(0)`.

Since, the point has
`x` value
`1` the vertical line passing through it will be
`(1,0)` which means
`x=1`.