In Exercises 39–50, graph the given functions, f and g, in the same rectangular coordinate system. Select integers for x, starting with -2 and ending with 2. Once you have obtained your graphs, describe how the graph of g is related to the graph of f. f(x) = -2x, g(x) = -2x-1
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
3. Functions
Intro to Functions & Their Graphs
Problem 77
Textbook Question
In Exercises 77–92, use the graph to determine a.the x-intercepts, if any; b. the y-intercept, if any; and e. the missing function values, indicated by question marks, below each graph.

Verified step by step guidance1
Step 1: Identify the x-intercepts of the graph. The x-intercepts are the points where the graph crosses the x-axis. From the graph, these points are (-8, 0) and (10, 0).
Step 2: Identify the y-intercept of the graph. The y-intercept is the point where the graph crosses the y-axis. From the graph, this point is (0, 8).
Step 3: Analyze the missing function values indicated by question marks. For each missing value, locate the corresponding x-coordinate on the graph and determine the y-coordinate by observing the graph's behavior at that point.
Step 4: For example, if a missing value corresponds to x = 0, the y-coordinate is 8, as determined from the graph. Similarly, if a missing value corresponds to x = -8 or x = 10, the y-coordinate is 0.
Step 5: Summarize the findings: The x-intercepts are (-8, 0) and (10, 0), the y-intercept is (0, 8), and the missing function values can be determined by observing the graph at the specified x-coordinates.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
X-Intercepts
X-intercepts are the points where a graph crosses the x-axis, indicating where the function's output (y-value) is zero. To find x-intercepts, set the function equal to zero and solve for x. In the provided graph, the x-intercepts are located at the points (-8, 0) and (10, 0).
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Y-Intercept
The y-intercept is the point where a graph intersects the y-axis, representing the value of the function when x is zero. To determine the y-intercept, evaluate the function at x = 0. In the graph, the y-intercept is at the point (0, 8), indicating that the function's value is 8 when x is zero.
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Function Values
Function values refer to the outputs of a function for specific inputs. In the context of the graph, missing function values can be identified by observing the graph at given x-values. For instance, the graph shows a missing value at (0, -10), which indicates that the function's output is -10 when x is 0, highlighting the importance of analyzing the graph's behavior.
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