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Mathematics 19 Online
OpenStudy (anonymous):

Part A: Using the graph above, create a system of inequalities that only contain points A and E in the overlapping shaded regions. Explain how the lines will be graphed and shaded on the coordinate grid above. (5 points) Part B: Explain how to verify that the points A and E are solutions to the system of inequalities created in Part A. (3 points) Part C: William can only attend a school in his designated zone. William's zone is defined by y < -x - 1. Explain how you can identify the schools that William is allowed to attend. (2 points)

OpenStudy (anonymous):

help please i already did part b i just dont understand a and c

OpenStudy (anonymous):

ill submit the graph

OpenStudy (anonymous):

OpenStudy (anonymous):

i just need this last question and im done for winter break thanks for your time

OpenStudy (ranga):

Point A is (2, -3) and E is (3,1) The simplest set of inequalities to create would be a line passing through the origin and A and another line passing through the origin and E.

OpenStudy (anonymous):

thank you do you understand part c

OpenStudy (ranga):

C) Plot the line y = -x - 1 and shade the region below that line to represent y < -x -1 and all schools that lie in the shaded area will be the solution.

OpenStudy (anonymous):

thankyou so much for you time

OpenStudy (ranga):

You are welcome. For B) when you find the two lines passing thru A and the origin and E and the origin use the inequality y <= ??? for the line OE and y >= ??? for the line OA.

OpenStudy (anonymous):

ok thanks

OpenStudy (ranga):

alright. Happy Holidays!

OpenStudy (ranga):

When you draw the line for part C) draw a dotted line (that is, a non-continuous line because it is a "less than" inequality (<) and not a "less than or equal to" inequality (<=). So points on the line do NOT belong to the solution set. When you plot the line I think it will be a 45 degree downward line passing through A and -1 on the y-axis. Since it is a dotted line and A falls on the line A does not count in the solution. I think it will leave B and C in the shaded region for the solution set. For part B, the line should be continuous because we have chosen the points A and E to fall on the line and we should include the points A & E by making the lines continuous and making the inequalities <= and >=.

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