CAN SOMEONE PLEASE HELP ME!!?? IT WOULD BE A BIG FAVOR

- anonymous

CAN SOMEONE PLEASE HELP ME!!?? IT WOULD BE A BIG FAVOR

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- schrodinger

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- anonymous

ummmm

- anonymous

Line IJ has an equation of a line y=-3x-8. Which of the following could be an equation for a line that is parallel to line IJ?
A. y=3x+7
B. Y=1/3x+7
C. Y=-3x+7
D. Y=-1/3x+7

- anonymous

srry i suck at linear algebra

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## More answers

- anonymous

@pooja195 @Vocaloid

- anonymous

Thanks anyway

- Vocaloid

parallel means that the slope is the same
y = mx + b, where m is the slope
if y=-3x-8, what is m?

- anonymous

Wouldn't M be -3?

- Vocaloid

yup, now look at the answer choices and find another equation where m = -3

- anonymous

Ok so it's C?

- Vocaloid

excellent work, you got it ~

- anonymous

Thanks!! Do you think you can help me with another one?

- Vocaloid

sure

- anonymous

Find the perimeter of the shape below:

##### 1 Attachment

- anonymous

17.6
21.4
26.7
32.9

- Vocaloid

are you familiar with the pythagorean theorem?

- Vocaloid

a^2 + b^2 = c^2
does this equation look familiar?

- anonymous

No, not really but I know that perimeter you have to add all sides up

- anonymous

A little bit.

- Vocaloid

alright, so in order to find the length of each side, we'll use that equation
let me draw the graph out to make this a bit easier

- anonymous

Ok

- Vocaloid

|dw:1435087088021:dw|

- Vocaloid

|dw:1435087161806:dw|

- Vocaloid

alright, let's start off by finding the length of AB
the pythagorean theorem tells us that AB^2 = 1^2+4^2, so what is AB?

- anonymous

Would it be 17?

- Vocaloid

not quite
AB^2 = 17, right? so what is AB?

- anonymous

Haha I typed that in on my calculator and got 17

- Vocaloid

AB^2 = 17
so AB = square root of AB^2 = square root of 17

- anonymous

I'm not really sure.

- Vocaloid

AB = square root of 17

- anonymous

4??

- anonymous

4.123105626??

- Vocaloid

right, we'll round to 4.1 for now

- anonymous

the answer is C due to the fact they have the same slope

- anonymous

Ok

- Vocaloid

C was the answer for the first question BUT we're working on another question right now

- anonymous

That's what I thought but how do u get C in trying to learn

- Vocaloid

C was the answer for the FIRST question, we're working on a DIFFERENT question right now...

- anonymous

Ok so we round up to 4.1 then what?

- Vocaloid

anyway, back to the question, we found AB, right? now we need to find BC

- Vocaloid

|dw:1435087575549:dw|

- anonymous

Ok so we do the same thing right?

- Vocaloid

yes! do you think you can try to find BC now?

- anonymous

I got 2

- Vocaloid

not quite...
BC^2 = 2^2 + 2^2
BC = square root of BC^2

- anonymous

2.8?

- Vocaloid

yup! ok, let's move on to the next part, CD

- anonymous

Well I got 8 but the square root of 8 is like 2.8237432

- Vocaloid

|dw:1435087800899:dw|

- anonymous

Ok would CD be 7?

- Vocaloid

no, please do what we did before...

- Vocaloid

CD^2 = 7^2 + 2^2

- anonymous

I'm not sure about CD? Sorry

- Vocaloid

it's the same process we've been doing
CD^2 = 7^2 + 2^2
CD = square root of CD^2

- anonymous

Would it be 7.2

- anonymous

Now we just add all the numbers we got together

- Vocaloid

we're not done yet, we still have one more side left... AD...

- Vocaloid

|dw:1435088068612:dw|

- anonymous

Oh haha ok

- Vocaloid

once you find AD, THEN add up all the sides together and pick the closest answer (it might be a little off because of rounding)

- anonymous

Ok umm 6?

- Vocaloid

no, please repeat the same process we've been doing...

- Vocaloid

AD^2 = 6^2 + 4^2

- anonymous

7.1

- Vocaloid

alright, now add everything together and pick the closest response

- anonymous

Ok I got 21.1 so the closest one would be 21.4?

- Vocaloid

yup!
the reason why our answer doesn't match up exactly is because we rounded a bit

- anonymous

THANK YOU SO MUCH!! If I had a bunch of medals I would give them to you

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