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Mathematics 8 Online
OpenStudy (anonymous):

PLEASE HELP! will give metal

OpenStudy (anonymous):

OpenStudy (anonymous):

i know it is small sorry. you can zoom in by holding down Ctrl ans scrolling in or out.

OpenStudy (anonymous):

x+y=5 2y-10=2x these are the two equations you have

OpenStudy (anonymous):

yup

OpenStudy (anonymous):

b

OpenStudy (anonymous):

lets get the 2nd equation to standard form

OpenStudy (anonymous):

many solutions

OpenStudy (anonymous):

B is no solutions

OpenStudy (anonymous):

well graphing form for both would be y=5-x and 2y-10=2x -> 2y=2x+10 -> y=x+5

OpenStudy (anonymous):

I cant really see it

OpenStudy (anonymous):

than you can's be sure you are right.

OpenStudy (anonymous):

can't*

OpenStudy (anonymous):

wait b/c i did the wrong equation

OpenStudy (anonymous):

oh wait thats 2y=10-2x

OpenStudy (anonymous):

so the 2nd equations is y=5-x as well

OpenStudy (anonymous):

is it 2y=10-2x

OpenStudy (anonymous):

meaning the two equations are equal

OpenStudy (anonymous):

um, ok.

OpenStudy (anonymous):

and if the two equations are equal they will have the same solutions

OpenStudy (anonymous):

so it is A?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

many soultions is the answer

OpenStudy (anonymous):

thanks!

OpenStudy (anonymous):

no prob

OpenStudy (anonymous):

and hey try out this app called mathway

OpenStudy (anonymous):

can you help me with 1 more?

OpenStudy (anonymous):

you're welcome

OpenStudy (anonymous):

oh sure

OpenStudy (anonymous):

sure

OpenStudy (anonymous):

OpenStudy (anonymous):

sorry, this one is smaller, it is y + x + 0 y + 7x + 12

OpenStudy (anonymous):

(-2,-2)

OpenStudy (anonymous):

looking at the graphs, it cant be b because the 2nd equation has a y-intercept of 12 not 0 and it cant be c since the 2nd equation has a positive slope

OpenStudy (anonymous):

c&d sorry

OpenStudy (anonymous):

so you only have one option left

OpenStudy (anonymous):

a

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

thanks so much!

OpenStudy (anonymous):

no problem

OpenStudy (anonymous):

how is it A

OpenStudy (anonymous):

no it is my bad i didnt see all of them

OpenStudy (anonymous):

A is (-2,-2)

OpenStudy (anonymous):

Yea

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