Answer:- A function is represented by graph D.
Detailed explanation:
We use the vertical line test to determine whether or not the graph accurately depicts a function.
the vertical line test
A graph represents a function if any vertical line crosses it at precisely one point; otherwise, it does not.
Looking at the graphs, we see that the vertical line only ever crosses the graph D at one place.
Hence, graph D is a function.
Graphs are a visual representation of a function that can help us better understand the behavior of the function. Graphs are particularly useful in showing how the output of the function changes as the input changes. By plotting points on the graph, we can gain insight into the shape of the function and any patterns or trends that might exist.
There are many different types of functions, each with their own unique properties and behaviors. Some functions are continuous, meaning that they have no abrupt changes or discontinuities, while others are discontinuous, meaning that they have one or more points where the function is undefined or jumps from one value to another. Some functions are symmetrical, meaning that they have mirror-image properties, while others are asymmetrical, meaning that they have different properties on either side of the axis of symmetry.
In order to create an accurate graph of a function, we need to first determine the domain and range of the function. The domain of a function is the set of all possible inputs or values of x for which the function is defined, while the range of a function is the set of all possible outputs or values of y that the function can take on.
Once we have determined the domain and range of the function, we can then plot points on the graph. To do this, we choose a set of input values from the domain and calculate the corresponding output values using the function. We then plot each pair of input and output values as a point on the graph.
For continuous functions, we can then connect the dots with a smooth curve to create a complete graph of the function. For discontinuous functions, we need to plot each separate section of the function as a separate piece of the graph.
In addition to creating a graph of the function, we can also analyze the graph to gain insight into its properties and behavior. For example, we can look for points where the function intersects the x-axis or the y-axis, which can tell us about the roots or intercepts of the function. We can also look for points where the function has local maximum or minimum values, which can tell us about the behavior of the function near those points.
In conclusion, graphs are an important tool for understanding and analyzing functions. By creating a graph of a function, we can gain insight into its properties and behavior, which can help us make predictions and draw conclusions about the function. To create an accurate graph, we need to determine the domain and range of the function and plot points on the graph to show how the function changes as the input changes.
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