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Mathematics 21 Online
OpenStudy (anonymous):

How would I graph/solve 3x+5<=340

OpenStudy (noseboy908):

is the 5 alone or is it 5y?

OpenStudy (anonymous):

Oops 5y my bad!

OpenStudy (noseboy908):

yeah, that's what I though what you have to do is get "y" alone, so first subtract 3x from both sides to get what?

OpenStudy (anonymous):

5y<=340-3x?

OpenStudy (noseboy908):

just take our the = to make it correct, although you really should say it like this: "5y>-3x+340. Now, to make y alone, divide each side by 5 to get what?

OpenStudy (anonymous):

y>-3x+340/5?

OpenStudy (noseboy908):

not quite, make sure you divide each individual part by five

OpenStudy (anonymous):

y>-3x+68?

OpenStudy (noseboy908):

divide -3x/5 too

OpenStudy (anonymous):

y>=0.6x+68

OpenStudy (anonymous):

oops didnt mean to put = sign

OpenStudy (noseboy908):

no, you don't want to have a decimal for a slope. leave it as -3/5x

OpenStudy (noseboy908):

to get...

OpenStudy (anonymous):

y>-3x/5+68 So now it's y=mx+b form?

OpenStudy (noseboy908):

*-3/5x. but yes, it is. now graph. Do you know how to?

OpenStudy (anonymous):

Yes, thank you so much!!

OpenStudy (noseboy908):

welome! make sure to mark mine as the best answer! it sure helps!

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