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this is just a matter of subbing and seeing which ones are true. Lets try the first one... x + 3y >= -8 (-5,-1)....x = -5 and y = -1 now we sub -5 + 3(-1) >= -8 -5 - 3 >= -8 -8 >= -8 --- correct because -8 = -8 so this is a solution. You want to try the next one ?
x + 3y >= -8 (0,-3)...x = 0 and y = -3 now we sub 0 + 3(-3) >= -8 can you finish and see if it is true ?
-9 is less than -8 so false
wait...your sign is greater then or equal It is saying -9 is greater then or equal to -8....so it is false
sorry just looked at sign so it'll still be false because -9 is not greater than -8
keep this in mind....with positive numbers, the bigger the number, the greater it is...but with negatives, the smaller number is greater
want to try the next one because the 2nd one is not a solution
yes I'll try, just a sec
5>-8 which is true
x + 3y >= -8...x = -1 and y = -2 -1 + 3(-2) >= -8 -1 - 6 >= -8 -7 >= -8......this is true
I was just about to submit -7>=-8 which is true. Instead of me multiplying 3 *-2 I did 3*2
lol...be careful of your signs....they can mess with you every time
Every single time lol, about to work out the next one
ok...you know how to do this..you have proven that...now let see what you can do :)
-6>-8 is true
correct ^^ I told you that you could do this...great job
Thanks lol, Last one here I go
-10>-8 is false
you did it again...correct....woot woot...doing the happy dance now :)
lol Me to Celebration time, Thanks so much means so much that you'd stay even though I'm slow. I wish I could be like you just work problems out in a second without help. Thankssss
it takes practice and patience. You will one day be helping others learn this stuff. So your solutions are A,C,D because B and E were false....but you already knew this so why am I telling you...lol
lol I'm so happy. Thank you so much. I have one more question I think its A, its a graph though uggh! would you help, I'll post again?
you can post on this post....but I can't make any promises about knowing the answer....graphs are not my friend...lol
Thanks for helping
Which is the graph of y ≤ 1 – 3x?
I said A because it has a solid line, and its less than so it goes to the left
y = -3x + 1 --- I just rearranged it and temporarily removed the < sign y intercept is 1 or (0,1) x intercept can be found by subbing in 0 for y.. 0 = -3x + 1 3x = 1 x = 1/3 ... or (1/3,0) now back to your signs....it contains an equal sign, so it is a solid line. It is < (less then) so shading occurs below (or to the left) of the line. the correct graph is : A...you are correct :)
it takes me a little longer with graphs...lol
Never a problem, Thanks you're a hero. I'm going to take what you taught and apply to my other ones. Have a great night. I always like getting help from you, so great at explaining complicated things. Thanks so so much
glad to help :) good luck