Any graph of a mapping which is one-to-one or many-to-one but not one-to-many.
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If a graph is a function, it will always have y=... or x=... (or anoher letter equals an equation) for example y= 3x-12 is a function
A function describes the relationship between two or more variables. A graph is a kind of visual representation of one or more function. A line or curve seen on a graph is called the graph of a function. * * * * * For any point in the domain, a function can map to only ine point in the range or codomain. In simpler terms, it means that (for a two dimensional graph), a vertical line can intersect the graph of the function in at most one point.
No. It can also be a circle, ellipse or hyperbola.
Any graph in which there is at least one value of x for which there are more than one values of corresponding y. For example y = sqrt(x).
the graph is called a line