Select an ordered pair from the choices below that is a solution to the following system of inequalities: 3y < -9 -8 > 2x hlp me plzzz
y<-3
3y < -9 y < -9/3 y < -3 -8 > 2x -8/2 > x -4 > x we have y being less then -3 and x being greater then -4 (-3,-4) @primeralph ....would this be an ordered pair that is a solution to this ??
oops wait....x is less then -4
no its Answer (-4, 0) (-5, -4) (-3, -2) No solution
y is less then -3 and x is less then -4 I think it might be (-5,-4)
wat abt Select an ordered pair from the choices below that is a solution to the following system of inequalities: 5y < -3 − 3x 3x + 5y > 18 Answer (0, 0) No solution (8, -2) (-4, 0)
because -4 is less then -3 and - 5 is less then -4.
well...we might have to substitute the values into the inequality and see what is true
ok
5y < -3 - 3x :(8, -2) 5(-2) < -3 - 3(8) -10 < -3 - 24 -10 < -27 (this is true) 3x + 5y > 18 3(8) + 5(-2) > 18 24 - 10 > 18 14 > 18 (not true) It is not (8,-2) 5y < -3 - 3x (-4,0) 5(0) < -3 - 3(-4) 0 < -3 + 12 0 < 9 (true) 3x + 5y > 18 3(-4) + 5(0) > 18 -12 + 0 > 18 -12 > 18 (not true) It is not (-4,0) 5y < -3 - 3x (0,0) 5(0) < -3 - 3(0) 0 < -3 (not true) I do not think their is a solution for this.
what abt Select an ordered pair from the choices below that is a solution to the following system of inequalities: 3x − 4y > 7 y < 2x + 3 Answer (3, -3) No solution (-4, -1) (6, 3)
3x - 4y > 7 (3,-3) 3(3) - 4(-3) > 7 9 + 12 > 7 21 > 7 (true) y < 2x + 3 -3 < 2(3) + 3 -3 < 6 + 3 -3 < 9 (true) lucked out and got it on the first try.....solution is (3,-3)
Select an ordered pair from the choices below that is a solution to the following system of inequalities: 2x > -5 + 3y 2x − 5y < -6 Answer (-1, 1) (4, 3) (3, -1) No solution
do you see how I am doing these ?
no nt at all
just sub your x and y coordinates in and see if the inequality is true. It has to be true for both inequalities for it to be a solution
so -1,1
I haven't done it yet....but I can't keep doing these or I will get suspended
oh ok man
just sub in your x and y values and see of the inequality is true. Remember, it has to be true for both inequalities for it to be a solution
ill try
in your solution sets.....the first number is x and the second number is y (x,y)
so 2(1)>-5+3(-1)
2x > -5 + 3y (-1,1) sub -1 in for x and 1 in for y and see if the inequality is true. If it is, try it with the other inequality, if it is not, you do not need to go any farther because you know it won't work. You can do this.
x is the first number and y is the second number
so thn it 2>-5+-3
2x > -5 + 3y (-1,1) 2(-2) > -5 + 3(1)
oops...2(-1) > -5 + 3(1)
thts wht i did
can somebody plz help me
-2 > -5 + 3 -2 > -2 (is this true or false)
thn i gt 2>-5+-3
uhmm true
how are you getting 2 positive and where is the -3 coming from
no false its equal right
it is false....-2 is not > then -2....so this solution will not work
oh
so now you just move on to the next solution and see if it works on both inequalities
remember x is the first number and y is the second number
4,3
x is 4 and y is 3.....just sub it into your first inequality and see if it is true
2(3)>-5+3(4)
correct......continue
wait....wrong
6>-5+12
wht
2x > -5 + 3y (4,3) 2(4) >-5 + 3(3)
x is the first number and y is the 2nd
so 8>-5+9
your on the right track now
now what
what is -5 + 9
4
so now you have : 8 > 4.....is this true or false
false
do you know what the signs mean < and > ?
no
> means greater then < means less then 8 > 4.....this is saying 8 is greater then 4......is that true
oh ok so 4,3
don't know yet.....it may work for this inequality, but for it to be a solution, it has to work for both. So now you have to try (4,3) in the other inequality
ok
these problems are not hard, but they are time consuming
2x - 5y < -6 (4,3) try it
yeah im starting to get it
so its 2(4)-5(3)<-6
yes...continue
so thn 8-15<-6
your are doing good......now just finish
what is 8 - 15 ?
so -7<-6
so its true i thnk
yes....it is saying -7 is less then -6.....that is true. Negatives can be confusing. They are kinda the opposite of positive numbers. -7 IS less then -6. So it works for both inequalities, therefore,it is the solution
omg im geting it nw im goin to try Select an ordered pair from the choices below that is a solution to the following system of inequalities: 3x < -3+ 2y y − 2x > 4 Answer (0, 4) (-6, 0) (0, 6) (6, 3)
you know how to start this.....lets see what you can do
3x<-3+2y
now sub in your solution and see if it is true
(0,4) ---- x = 0 and y = 4
3(0)<-3+2(4)
your getting this...good job....now finish
0<-3+8
and what is -3 + 8
5
so we have 0 < 5......is this true
< means less then
false
0 is less then 5......true or false
oh true
now you have to try it with the other inequality
ok
y - 2x > 4 (0,4).....x = 0 and y = 4
so (4)-2(0)>4
correct
now you need to finish the problem
8 than 0>
can we take a 15 min brake my head hurt
do you mind
no.... 4 - 2(0) > 4 4 - 0 > 4 4 > 4 not true.....4 is not less then 4, it is equal, so this solution is not correct I am sorry but I am fixing to have to go somewhere....you can do this....again, I am sorry that I cannot continue
its ok
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