Write the equation of the line which passes through (2, 1) and is perpendicular to x = –2.

I know that X = -2 is a vertical line. And also the point (2, 1) is vertical.

Question

Write the equation of the line which passes through (2, 1) and is perpendicular to x = –2. 

I know that X = -2 is a vertical line. And also the point (2, 1) is vertical.

anonymous · Answer

$(2,1)$ is not vertical , it is a point, not a line
but you are right, $x=-2$ is a vertical line, making the perpendicular line horizontal

anonymous · Answer

therefore the question could read "find the equation of a horizontal line through the point $(2,1)$

anonymous · Answer

you know that the equation of a vertical line is $x=c$ for some number $c$ similarly the equation for a horizontal line is $y=c$

anonymous · Answer

it is clear what $c$ is in this case, it is the second coordinate yes?

anonymous · Answer

wait what?

anonymous · Answer

im so confused.....):