In Exercises 69–70, rewrite each inequality in the system without absolute value bars. Then graph the rewritten system in rectangular coordinates. |x|≤2, |y|≤3
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
7. Systems of Equations & Matrices
Graphing Systems of Inequalities
Problem 79
Textbook Question
Find the maximum and minimum values of each objective function over the region of feasible solutions shown at the right. objective function = 3x + 5y
Verified step by step guidance1
Identify the feasible region defined by the constraints given in the problem (usually shown graphically or by inequalities). This region represents all possible values of \(x\) and \(y\) that satisfy the constraints.
List the corner points (vertices) of the feasible region. These points are where the constraint lines intersect and are critical because the maximum and minimum values of a linear objective function over a polygonal region occur at these vertices.
Write down the objective function \(Z = 3x + 5y\) and prepare to evaluate it at each vertex of the feasible region.
Substitute the coordinates of each vertex into the objective function \(Z = 3x + 5y\) to calculate the value of \(Z\) at those points.
Compare the values of \(Z\) obtained at each vertex to determine which is the maximum and which is the minimum value of the objective function over the feasible region.
Verified video answer for a similar problem:This video solution was recommended by our tutors as helpful for the problem above
Video duration:
3mPlay a video:
Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Objective Function
An objective function is a mathematical expression that defines the goal of an optimization problem, typically to maximize or minimize its value. In this case, the function 3x + 5y represents a linear combination of variables x and y, whose values we want to optimize over a given region.
Recommended video:
Permutations of Non-Distinct Objects
Feasible Region
The feasible region is the set of all possible points (x, y) that satisfy the problem's constraints, often represented as inequalities. This region is usually a polygon or polyhedron in linear programming, and the optimal values of the objective function lie within or on the boundary of this region.
Recommended video:
Probability of Non-Mutually Exclusive Events Example
Linear Programming and Optimization
Linear programming involves finding the maximum or minimum value of a linear objective function subject to linear constraints. The optimal solution for such problems occurs at the vertices (corner points) of the feasible region, so evaluating the objective function at these points determines the maximum and minimum values.
Recommended video:
Linear Inequalities
Related Videos
Related Practice
Textbook Question
393
views
