Question

In Problems 35-42, graph each system of inequalities. $\left\{\begin{array}{l}y \geq x^2-4 \\ y \leq x-2\end{array}\right.$

   In Problems 35-42, graph each system of inequalities.
$\left\{\begin{array}{l}y \geq x^2-4 \\ y \leq x-2\end{array}\right.$
Precalculus: pearson new international edition
Precalculus: pearson new international edition
Michael Sullivan 9th Edition
Chapter 11, Problem 37 ↓

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- This inequality represents the region above or on the parabola \( y = x^2 - 4 \). - To graph \( y = x^2 - 4 \), plot points for several values of \( x \) and calculate \( y \). For example: - If \( x = 0 \), then \( y = 0^2 - 4 = -4 \). - If \( x = 1 \) or  Show more…

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In Problems 35-42, graph each system of inequalities. $\left\{\begin{array}{l}y \geq x^2-4 \\ y \leq x-2\end{array}\right.$
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Key Concepts

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Systems of Inequalities
A system of inequalities involves two or more inequality relations that must be satisfied simultaneously. The solution is found by graphing each inequality and identifying the region where all the individual solution sets overlap.
Graphing Quadratic Functions
Graphing quadratic functions entails plotting a parabola, which is a U-shaped curve that represents a second-degree polynomial. Key aspects include determining the vertex, axis of symmetry, and whether it opens upward or downward based on the coefficient of the squared term.
Graphing Linear Functions
Graphing linear functions involves drawing a straight line based on a linear equation. Important features include the slope (which indicates the steepness and direction of the line) and the y-intercept, which is the point where the line crosses the y-axis.
Shading Regions for Inequalities
When graphing inequalities, one shades the region of the graph that satisfies the inequality condition. For each individual inequality, the boundary (line or curve) is drawn and then the side corresponding to the solution of the inequality is shaded using a test point, typically the origin if it is not on the boundary.
Intersection of Regions
The final solution to a system of inequalities is the intersection of all shaded regions. This common area represents all the points that simultaneously satisfy every inequality in the system.

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In Problems $35-42,$ graph each system of inequalities. $\left\{\begin{aligned} x y & \geq 4 \\ y & \geq x^{2}+1 \end{aligned}\right.$

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