Which ordered pair is not in the solution set of x-2y<6? a) (2,-2) b) (0,0) c)(5,1) d)(1,-6) thank you
an explanation would be lovely too. thanks :)
ok.we got both x and y coordinates with us.so simply start putting it in equation. a) 2-2(-2)<6 2+4 <6 6<6 No,that is not correct.What do you think?
Okay, so next would be 0,0 so 0+0(-2)<6 so that would be -2<6 thats right yes?
yes thats correct.what about the next one?
next is 5,1 so 5+1(-2)<6 6+-2<6 -4<6 that would be correct
Great.You got it.Lets proceed to the last one..
1,-6 1+-6<6 -5<6 that would also be correct
nvm i forgot to add the -2!
one second
But in (c),you did a small mistake that is 6+-2=4 not -4..But fortunately it will not change the conclusion.
1,-6 1+-6(-2)<6 13<6 that wouldn't be correct
Sorry for distracting..
no thank you for telling me
Yes,so we got two answers (a) and (d).Not possible..!Is it only less than or is it less than and equal to sign in the equation??
its less than or equal too in the equation. so would that make it choice a?
So it makes choice (a) correct....But the questions wants us to point out which one is not correct.So, Congratz,(d) is the only answer left.
Thank you so much for your help and explaning this to me!
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