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Mathematics 18 Online
OpenStudy (anonymous):

HELP!!!! Ill give a medal to whoever can help me!!!! Which ordered pair is a solution to the inequality y > x + 5? (-3, 2) (0, -3) (3, 5) (2, 8)

jimthompson5910 (jim_thompson5910):

looking at choice A, which is (-3, 2) this means x = -3 and y = 2

jimthompson5910 (jim_thompson5910):

so plugging this point in means that you plug in x = -3 and y = 2 to get y > x + 5 2 > -3 + 5 2 > 2 since that last inequality is FALSE, this means that (-3, 2) is NOT a solution to the inequality

jimthompson5910 (jim_thompson5910):

so choice A is eliminated do the same for the other choices

OpenStudy (anonymous):

i think its choice c is that correct??

jimthompson5910 (jim_thompson5910):

let's check it out

jimthompson5910 (jim_thompson5910):

y > x + 5 5 > 3 + 5 ... plug in (3, 5) ...ie plug in x = 3 and y = 5 5 > 8 is that true?

OpenStudy (anonymous):

i think so?

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

5 is greater than 8? you sure?

OpenStudy (anonymous):

oh no its not true!!

OpenStudy (anonymous):

so then its B or D

OpenStudy (anonymous):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

ok so which of the two is it

jimthompson5910 (jim_thompson5910):

plug in each point and see which inequalities are true or false

OpenStudy (anonymous):

B???? @jim_thompson5910

jimthompson5910 (jim_thompson5910):

y > x + 5 -3 > 0 + 5 ... plug in (0, -3) -3 > 5 is that true?

OpenStudy (anonymous):

yep @jim_thompson5910

OpenStudy (anonymous):

so its B then right?? @jim_thompson5910

jimthompson5910 (jim_thompson5910):

no -3 is not larger than 5

jimthompson5910 (jim_thompson5910):

-3 > 5 is false

OpenStudy (anonymous):

ohh lol i got confused with the sign sorry so its D got it sorry about that lmao

jimthompson5910 (jim_thompson5910):

correct, and it's ok, just give it some more practice

OpenStudy (anonymous):

i will thank you :)

jimthompson5910 (jim_thompson5910):

yw

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