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Pre-Algebra 19 Online
OpenStudy (anonymous):

helpp with math!!!!!!!!!!!!!!!!!

OpenStudy (anonymous):

question?

OpenStudy (anonymous):

hold on let me find problem this may take a minute

OpenStudy (anonymous):

i need to graph and find the three points for the equation 3x-y=2

OpenStudy (anonymous):

my question is 2y=3x+11 i have to graph it but i dont know how

OpenStudy (anonymous):

i also need step by step instructions on how to do this so it can help me with more problems just like this

OpenStudy (anonymous):

Ok. Just a second.

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

first put it into the form y=mx+b what do you have to do to get the y all by itself?

OpenStudy (anonymous):

ok i put it into y=mx+b form and i have y=mx+b which equals 2=3x+11

OpenStudy (anonymous):

y has to be ALL by itself, you need to divide both sides of the equation by 2

OpenStudy (anonymous):

you need to get Y by itself

OpenStudy (anonymous):

how can i divide 3x+11 by 2

OpenStudy (anonymous):

y = (3 x)/2+11/2 x = 2 x+1, y = 3 x+7, y = 1/2 (3 x+11)

OpenStudy (anonymous):

when you divide 3x+11 by 2 you get fractions or decimals. That is allowed.

OpenStudy (anonymous):

3/2 and 11/2

OpenStudy (anonymous):

ok puahina got y=1/2(3x+11) what does that equal cause i suck at that kind of math

OpenStudy (anonymous):

would i do 1/2*3+11 and then try to find x or is 1/2*3+11 the right answer

OpenStudy (anonymous):

^kaitlin has it

OpenStudy (anonymous):

yes but i have to graph this with three points

OpenStudy (anonymous):

so now you have y=mx+b

OpenStudy (anonymous):

mertsji i alredy know that

OpenStudy (anonymous):

where m is the slope and b is the y-intercept.

OpenStudy (anonymous):

1/2*3+11 is the answer.

OpenStudy (anonymous):

it's hard to explain when everyone types at once.

OpenStudy (anonymous):

ok how would i mark 5.5 when the graph i have will only let me do whole numbers

OpenStudy (anonymous):

it wont let me put a dot inbetween two lines

OpenStudy (anonymous):

oh, then you have to find points with integer coordinates.

OpenStudy (anonymous):

ok so i estimate it and get 6 right

OpenStudy (anonymous):

no. what you do is go one unit to the left or right and one and a half units up or down

OpenStudy (anonymous):

according to the slope

OpenStudy (anonymous):

peter i cant do halves on this graph that i am using

OpenStudy (anonymous):

Heres a graph that you can use.

OpenStudy (anonymous):

up or down 1 and a half from 5 and a half gives you 4 or 7.

OpenStudy (anonymous):

ok puahina the point for -2 goes on the x axis

OpenStudy (anonymous):

i know have -2,0 and 0,1

OpenStudy (anonymous):

did i mention this haad to be a straight line if i did not sorry

OpenStudy (anonymous):

yes we m ust be

OpenStudy (anonymous):

my graph looks nothing like yours mertsj

OpenStudy (anonymous):

i dont i tripled checked

OpenStudy (anonymous):

these are the points i have -4,-1 -2,0 and 0,1

OpenStudy (anonymous):

Yeah his graph is correct.

OpenStudy (anonymous):

thank you puahina finally some one who understands me

OpenStudy (anonymous):

Your Welcome.

OpenStudy (anonymous):

I make sure my answers are right before I just post them.

OpenStudy (anonymous):

this is what i got

OpenStudy (anonymous):

yes just look at my graph

OpenStudy (anonymous):

puahina does my graph look right to you

OpenStudy (anonymous):

mertsj attach a picture of whta your graph looks like

OpenStudy (anonymous):

whats that suppose to mean

OpenStudy (anonymous):

Yes it does. @Mertsj what does your equation equal to?

OpenStudy (anonymous):

what do you mean what does my equation equal to

OpenStudy (anonymous):

No not u. Mertsj

OpenStudy (anonymous):

But he left.

OpenStudy (anonymous):

yeah he did he probably went crying to his mommy

OpenStudy (anonymous):

shoot my points were incorrect i knew i should have trusted mertsj

OpenStudy (anonymous):

ok new question -4y=-5x-18

OpenStudy (anonymous):

im sorry mertsj i shoulld've trusted tyou

OpenStudy (anonymous):

i know i put the equation in y=mx+b form

OpenStudy (anonymous):

ok if i put this equation in y=mx+b form i would get 4=-5x-18

OpenStudy (anonymous):

You only had your line a little off. Mistakes happen, Its my fault too though i just realized i wasnt even looking at YOUR graph. :( your next question should look like this.

OpenStudy (anonymous):

is that a positive 6 and a negative 4 puahina

OpenStudy (anonymous):

hey mertsj leave her alone its not her fault

OpenStudy (anonymous):

ok i have my first point which is 0,-3

OpenStudy (anonymous):

ok i have my second point which is -3,0

OpenStudy (anonymous):

Its a negetive 4. My line was just a little long.

OpenStudy (anonymous):

ok so

OpenStudy (anonymous):

so i think i found my other point not for sure but i think it is -4,1

OpenStudy (anonymous):

this is what i got

OpenStudy (anonymous):

i dont know if my graph is right

OpenStudy (anonymous):

It looks right compared to mine.

OpenStudy (anonymous):

can you attach a file so i can see yours

OpenStudy (anonymous):

OpenStudy (anonymous):

puahina my graph looks nothing like yours maybe you or me missed something

OpenStudy (anonymous):

and thats the same graph you posted for the last question

OpenStudy (anonymous):

i will be right back in 15 minutes or maybe 10

OpenStudy (anonymous):

Its not the same one the last one had 10 and 5 on the X axis. And they look differnt but its just because Your Y axis and X axis is just in a different position then mine but they both equal the same. I attached the last graph i did so yiu can see the difference between the one i just posted.

OpenStudy (anonymous):

ok lets just say this i dont know whos graph is right

OpenStudy (anonymous):

my graph was wrong

OpenStudy (anonymous):

new question -x-2y=-10

OpenStudy (anonymous):

add -2y to both sides it cancels out on the left side now you have -x=-10+2y

OpenStudy (anonymous):

now add -10 to both sides it cancels out on the right you now have this equation -x+10=2y

OpenStudy (anonymous):

now you need to get rid of that two, so divide all the numbers in there by two

OpenStudy (anonymous):

Heres the graph.

OpenStudy (anonymous):

ok the 10 is right on your graph puahina but the other dot i dont know what it is

OpenStudy (anonymous):

ok know the 5 is right

OpenStudy (anonymous):

Oops sorry Im not good making my lines clear.

OpenStudy (anonymous):

1/2?

OpenStudy (anonymous):

Im here i was checking email.

OpenStudy (anonymous):

And your correct it should be one of those four. Im going to figure it out now.

OpenStudy (anonymous):

i have a new problem it is -5x-3y=-7

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