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Example: Reading the Domain and Range from the Graph of a Function
Consider a graph of a function consisting of a curved line segment. To find the domain, observe the horizontal spread of the graphed curve on the -axis. If the graph covers -values from to inclusive, the domain written in interval notation is . Similarly, to find the range, observe the vertical spread of the curve on the -axis. If the graph's lowest point corresponds to a -value of and its highest point reaches a -value of , the range in interval notation is .
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OpenStax
Intermediate Algebra @ OpenStax
Ch.3 Graphs and Functions - Intermediate Algebra @ OpenStax
Algebra
Related
Example: Graphing the Function
Example: Graphing the Function
Example: Graphing the Function
Reading the Domain of a Function from its Graph
Reading the Range of a Function from its Graph
Example: Reading the Domain and Range from the Graph of a Function
Example: Reading Function Values, Intercepts, Domain, and Range from a Graph
Constant Function
Square Function
Example: Comparing the Graphs of and
Example: Reading Function Values, Intercepts, Domain, and Range from a Graph (Variant 1)
A service technician uses a function to calculate the total repair cost based on the number of hours () worked. To analyze the billing data, the technician views the function's graph. Match each mathematical term with its correct description in the context of this graph.
In the graph of a mathematical function , the -coordinate of any point on the graph can be represented by the function notation .
A project manager uses a function to model the total production cost of a specific part, where represents the number of units produced. When the manager looks at the graph of this function on a coordinate plane, what does the value represent for any point on the graph?
Visualizing Industrial Data
A business analyst is using a mathematical function to model a company's weekly shipping costs. When this function is plotted on a coordinate system, the resulting graph serves as a visual representation of all the function's ordered ____, which can be written in the form to show the relationship between a specific week and its cost.
Learn After
In a professional technical training session, an instructor asks you to identify the components of a machine's performance graph. Match each mathematical term with the correct observation needed to find it on the graph.
A quality control technician is examining a graph that monitors the pressure levels in a hydraulic press throughout a work shift. According to the standard procedure for reading graphs, to identify the range of the pressure levels recorded, which visual characteristic of the graph must be observed?
A data analyst is reviewing a performance graph in a technical report. According to the standard procedure for graph interpretation, the analyst should identify the range of the function by observing the horizontal spread of the curve along the -axis.
Interpreting System Performance Graphs
When reviewing a machine's performance graph in a quality control report, an analyst needs to determine the horizontal spread of the graphed curve on the -axis. By identifying this horizontal spread, the analyst is finding the ____ of the function.