Not always. Only if the point is on the line. it
Straight Angle
When you graph a line using only the slope and a point, you start by graphing the point.
Two points determine a line. Also there is one and only line perpendicular to given line through a given point on the line,. and There is one and only line parallel to given line through a given point not on the line.
A tangent line.
It's the theorem that says " One and only one perpendicular can be drawn from a point to a line. "
There is only one point on the line segment, which is equidistant from the endpoints.
A point on a number line.
The general equation of the line is y = 3x + c. Having only one coordinate (21) of a point on this line is not enough to evaluate c.
Since a Line has only one dimention LENGTH, the only way to identify a point on it is to measure its distance from a known point ... usually on end or the other.
Yes
That is a tangent line.