If the system of inequalities y≤−3x−4 and y≤3x+8 is graphed in the xy-plane, which quadrant contains no solutions to the system?Choose 1 answer:(A) Quadrant I(B) Quadrant II(C) Quadrant III(D) Quadrant IV
Q. If the system of inequalities y≤−3x−4 and y≤3x+8 is graphed in the xy-plane, which quadrant contains no solutions to the system?Choose 1 answer:(A) Quadrant I(B) Quadrant II(C) Quadrant III(D) Quadrant IV
Understand Inequalities: First, let's understand the inequalities given. The first inequality is y≤−3x−4, and the second inequality is y≤3x+8. These inequalities define regions in the xy-plane where their respective conditions are met. To find out which quadrant contains no solutions to the system, we need to analyze the direction in which these inequalities point on the graph.
Graph First Inequality: Graph the first inequality y≤−3x−4. This line has a negative slope and crosses the y-axis at −4. The inequality y≤−3x−4 means that the solution set includes the area below this line. This area will cover parts of Quadrants III, IV, and II.
Graph Second Inequality: Graph the second inequality y≤3x+8. This line has a positive slope and crosses the y-axis at 8. The inequality y≤3x+8 means that the solution set includes the area below this line. This area will cover parts of Quadrants III, IV, and I.
Identify Quadrant Solutions: To find the quadrant with no solutions to the system, we need to identify where the solution sets of the two inequalities do not overlap. From the previous steps, we know that the solution set of the first inequality covers parts of Quadrants extIII, extIV, and extII, and the solution set of the second inequality covers parts of Quadrants extIII, extIV, and extI.
Consider Overlapping Sets: Considering the overlap of the solution sets from both inequalities, we can see that Quadrants extIII and extIV are common to both, indicating that they contain solutions. Quadrant extII is only mentioned in the context of the first inequality, and Quadrant extI is only mentioned in the context of the second inequality. However, since both lines have areas below them that extend into Quadrants extI and extII, we need to consider the direction of the inequalities more carefully.
Find Quadrant with No Solutions: Upon closer examination, we realize that the intersection of the solution sets (areas below both lines) does not include Quadrant I. This is because Quadrant I is above both lines for positive values of x and y, which do not satisfy either of the inequalities when considered together. Therefore, Quadrant I is the quadrant that contains no solutions to the system of inequalities.