Because each vertical lines meets its graph in a unique point.
the graph of a quadratic function is a parabola. hope this helps xP
MATH 1003?
Odd Function
A function f(x) is even if f(-x) = f(x). A graph of f(x) would be symmetric about the y-axis (vertical symmetry about x=0). f(x) need not be "well-behaved" or even continuous, unlike the examples given in Wikipedia article on "Even and odd functions". The article does make this clear - under "Some facts".
A graph is represents a function if for every value x, there is at most one value of y = f(x).
if the question is why is it labelled as f(x) ? it means the function (the 'f') at a certain x value. saying f(x) is said as 'f at x'. it's the same as saying 'function at x'
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 point (x,y) is on the graph of the even function y = f(x) then so is (-x,y)
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.
f(x)=2X-2
an exponential function flipped over the line y=x
No. It depends on the function f.
Does the graph above show a relation, a function, both a relation and a function, or neither a relation nor a function?
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.