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If you're only given one point, you can't draw the graph of the line, because there are an infinite
number of different lines that all go through that one point.
Or, to put it another way, if someone gives you a single point and asks you to draw the line through it,
you can draw any old line you want through that point, and nobody can say it's wrong.
In order to pin it down to one unique line, you need another piece of information in addition to
the one point: either the slope of the line, or another point.
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How do you determine whether a graph a mathematical relationship is a function?
Draw a vertical line if the line hits more than one point on the graph then it is not a function.
When can you say that the graph is function or mere relation?
If a vertical line intersects the graph at more than one point then it is not a function.
Is a horizonal line crosses the graph of a function of f at more than one point?
It can do.
How does the graph show that the quadratic is a function?
No vertical line will intersect the graph in more than one point. The fundamental flaw is that no graph can show that it does not happen beyond the domain of the graph.
How can you tell the difference graph or 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.
