A sliding test. The vertical line can meet the graph at at most one point.
If the graph is a function, no line perpendicular to the X-axis can intersect the graph at more than one point.
base
take a vertical line, if another line intersects that vertical line at 2 points, then it is a function.In other words,a graph represents a function if each vertical line meets its graph in a unique point.
A derivative of a function represents that equation's slope at any given point on its graph.
If for every point on the horizontal axis, the graph has one and only one point corresponding to the vertical axis; then it represents a function. Functions can not have discontinuities along the horizontal axis. Functions must return unambiguous deterministic results.
Because f represents a function.
A graph represents a function if and only if every input generates a single output.
If the graph is a function, no line perpendicular to the X-axis can intersect the graph at more than one point.
If the function is a straight line equation that passes through the graph once, then that's a function, anything on a graph is a relation!
This graph fails the vertical line test at x = 3This graph is not the graph of a function.
A graph is represents a function if for every value x, there is at most one value of y = f(x).
an exponential function flipped over the line y=x
Does the graph above show a relation, a function, both a relation and a function, or neither a relation nor a function?
base
take a vertical line, if another line intersects that vertical line at 2 points, then it is a function.In other words,a graph represents a function if each vertical line meets its graph in a unique point.
There is no 'point on a graph' which represents Ohm's Law. It's the shape of the graph that determines whether Ohm's Law applies.If a graph is drawn showing the resulting variation in current for changes in voltage then, for Ohm's Law to apply, the graph must be a straight line.If the resulting graph is not a straight line, then Ohm's Law doesn't apply.
A-If there exists a vertical line that intersects the graph at exactly one point, the graph represents a function.B-If there exists a vertical line that intersects the graph at exactly one point, the graph does not represent a function. C-If there exists a vertical line that intersects the graph at more than one point, the graph represents a function.-DIf there exists a vertical line that intersects the graph at more than one point, the graph does not represent a function