Question

Pre Calc: Write an equation of the line perpendicular to the graph of x = 3 and passing through D(4, –1).

Answer 1

\(x=3\) is vertical, so your line is horizontal
horizontal line looks like \(y=\text{some number}\)
in your case that number is \(-1\)

Answer 2

@satellite73 okay, how do I find a slope of x=3 to right a perpendicular equation?

Answer 3

The slope of a line like"---" is zero.

The slope of a line like" | " is undefined.

Answer 4

@saifoo.khan thanks a bunch <3

Answer 5

You welcome.
@samalami