can you check my work?

Question

anonymous · Answer

To which graph does the point (2, 4) belong?

 y ≥ x + 3
 y ≥ −x + 8
 y ≥ 4x − 5 <--- my answer choice
 y ≥ −2x + 9

anonymous · Answer

@hartnn @surjithayer

nincompoop · Answer

how did you solve for it?

anonymous · Answer

my brother showed me the way and i was seeing if its correct then if someone could show me the steps because he didn't explain it clearly

nincompoop · Answer

so how did you pick that option ? I just want to know if you guessed or you did real math.

anonymous · Answer

no my brother did the math and told me the answer but im not sure because when he was explaining it it didn't make sense...

anonymous · Answer

plug every point one by one and see which satisfy

anonymous · Answer

im also looking for someone to show me how to do it

anonymous · Answer

okay give me a sec

nincompoop · Answer

okay. 
There are different ways to do it, but it all starts with identifying the intercepts.  Do you need a tutorial in identifying intercepts or do you already know it?

anonymous · Answer

should i try doing it like surji said for now but give me one sec plz

nincompoop · Answer

you can do it, but it seems that you need to understand beyond plugging in values.

anonymous · Answer

(2, 4) 
 y ≥ x + 3             =       4 ≥ 2 +3 =    4 ≥ 5 which is false so its not A 
 y ≥ −x + 8           =       4 ≥ -2 + 8 =   4 ≥ 6 which is false so not B 
 y ≥ 4x − 5           =       4 ≥ 4(2) - 5   = 4 ≥ 8-5 = 4 ≥ 3 which is correct so it is C
 y ≥ −2x + 9        =       4 ≥ -2(2) + 9 =  4 ≥ -4 + 9 = 4 ≥ 5 which is false so not D

anonymous · Answer

okay so now that i have done it that way can you show me your way? nincompoop?

nincompoop · Answer

my way is learning linear equation.

anonymous · Answer

can you teach me if you don't mind>

nincompoop · Answer

since your inequality has greater than or EQUAL to, we can start with equality $y = mx + b  $

anonymous · Answer

then what>|?

nincompoop · Answer

The m is your slope. e b is your y-intercept - point where the value of the coordinate is (0, y). It means that the value of x is just zero (x = 0) and the value of y is anywhere -infinity and +infinity.  So, pretty much the value of b is your actual y intercept 
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anonymous · Answer

so so do you plug in like (0,4) then (2,0)?

nincompoop · Answer

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nincompoop · Answer

brb. work-related

ganeshie8 · Answer

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