It is simply called a point on the graph, or a solution to the equation represented by the graph.
The coordinates of every point on the graph, and no other points, are solutions of the equation.
Because their is no lines on the graph to connect the point.
A point of intersection.
A point on a graph that is not on the line or set of lines on a coordinate plane.
a picture graph uses pictures to show the point and bar graph use bar lines to show the point.
the point of intersecting
Because each vertical lines meets its graph in a unique point.
Substitute the point into the equation, eg. if you have point (1,2) and equation y=3x+7 you get 2=3*1+7 =10 2 doesnt equal 10, so (1,2) isn't on the graph y=3x+7