Q. Graph the solution of the following system of inequalities. Find the vertex of the solution.{x+y≤73x−y≥9
Graph Inequality x+y≤7: Graph the first inequality x+y≤7. To graph this inequality, first graph the line x+y=7. This is a straight line with a slope of −1 (since y=−x+7) and a y-intercept of 7. To find another point, set x to 0, then y=7. Set y to 0, then x+y≤72. Plot these points x+y≤73 and x+y≤74 and draw a line through them. Since the inequality is less than or equal to, shade the area below the line.
Graph Inequality 3x−y≥9: Graph the second inequality 3x−y≥9. To graph this inequality, first graph the line 3x−y=9. This is a straight line with a slope of 3 (since y=3x−9) and a y-intercept of −9. To find another point, set x to 0, then y=−9. Set y to 0, then 3x−y≥92. Plot these points 3x−y≥93 and 3x−y≥94 and draw a line through them. Since the inequality is greater than or equal to, shade the area above the line.
Identify Overlapping Region: Identify the region where the shaded areas from Step 1 and Step 2 overlap.The solution to the system of inequalities is the region where both shaded areas overlap. This is the feasible region that satisfies both inequalities.
Find Solution Vertex: Find the vertex of the solution.The vertex of the solution is the point of intersection of the two lines x+y=7 and 3x−y=9. To find this point, we can solve the system of equations simultaneously.x+y=73x−y=9Adding these two equations, we get:4x=16x=4Substitute x=4 into the first equation:4+y=7y=3So the vertex of the solution is at the point (4,3).