anonymous
  • anonymous
Which of the following points lie in the solution set to the following system of inequalities? y less than or equal to x - 5 y greater than or equal to -x - 4 (-5, 2) (5, -2) (-5, -2) (5, 2)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@amistre64 @Callisto @phi
anonymous
  • anonymous
@AravindG
AravindG
  • AravindG
Did you graph them and found the solution region?

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More answers

anonymous
  • anonymous
No, How would I do that?
anonymous
  • anonymous
use graph paper graph the lines y=x-5 and y=-x-4
AravindG
  • AravindG
yep
anonymous
  • anonymous
find the region below or on the line y=x-5 and above or on the line y=-x-4
AravindG
  • AravindG
you could also use a graphing calculator
AravindG
  • AravindG
Here is one : http://my.hrw.com/math06_07/nsmedia/tools/Graph_Calculator/graphCalc.html
anonymous
  • anonymous
I'm in a library, so I don't have graphing paper, and I have no clue how to use a graphing calculator. :/
AravindG
  • AravindG
its easy just plugin the quations in boxes y1 and y2
AravindG
  • AravindG
*equations
anonymous
  • anonymous
Okay. I'll try it right now;
anonymous
  • anonymous
or go to https://www.desmos.com/calculator and type in the two equations (copy and paste works too)
anonymous
  • anonymous
How do I make a less than or equal too sign on the graphing calculator?
anonymous
  • anonymous
you don't need to, just graph the line and remember you are looking at the region less than or equal to it
AravindG
  • AravindG
In my calculator click on the square having equal to after the y1 or y2
anonymous
  • anonymous
I'm so confused > . <
anonymous
  • anonymous
in desmos, enter the less than sign then the equals sign <= or >=
anonymous
  • anonymous
Okay, I'm gonna use desmos then.
AravindG
  • AravindG
ok.
anonymous
  • anonymous
I did it. What next?
anonymous
  • anonymous
you typed in both your equations?
anonymous
  • anonymous
Yes.
anonymous
  • anonymous
look at where your four points are
anonymous
  • anonymous
see which one satisfies both inequalities
anonymous
  • anonymous
0,5 and -4,5
anonymous
  • anonymous
@Peter14
amistre64
  • amistre64
i woulda just plugged in the 4 points to see what made true results
amistre64
  • amistre64
(-5, 2) is 2 <= -5 - 5 true? is 2 >= --5 - 4 true? (5, -2) is -2 <= 5 - 5 true? is -2 >= -5 - 4 true? (-5, -2) is -2 <= -5 - 5 true? is -2 >= --5 - 4 true? (5, 2) is 2 <= 5 - 5 true? is 2 >= -5 - 4 true?
anonymous
  • anonymous
Oh, okay! @amistre64 I'll try that,
amistre64
  • amistre64
it is nice to know that other stuff, but it takes way to much time when taking a test.
anonymous
  • anonymous
It's -5, -2, right?
amistre64
  • amistre64
(-5, -2) -2 <= 0 true -2 >= 1 false not that one
amistre64
  • amistre64
well, -10 up top, but still false :)
anonymous
  • anonymous
So, it's -5, something right?
amistre64
  • amistre64
dunno, lets try another one (5, -2) -2 <= 5 - 5 -2 <= 0 true -2 >= -5 - 4 -2 >= -9 true that fits nicely
anonymous
  • anonymous
Awesome. Thanks :)

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