what is the slope intercept form of f=4(s-65)+10

- anonymous

what is the slope intercept form of f=4(s-65)+10

- chestercat

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- anonymous

huh?

- anonymous

Which variable is for the vertical axis, and which one is for the horizontal axis?

- anonymous

i dont know actually! its a paragraph you have to read

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## More answers

- anonymous

what do f and s stand for?

- anonymous

f=find & s=speed but i have tu put the equation in slope intercept form

- anonymous

Well, it doesn't matter much. Solving one for slope intercept will be correct, it just depends on how you wanted to graph it. But the one you solve for will determine that.

- anonymous

Hmm, the teacher may not agree with that, even though you are correct.

- anonymous

Well, slope intercept form is y=mx+b

- anonymous

What is the number you are trying to find? F or S?

- anonymous

s=78 , we have to find f

- anonymous

Ah, thank you! So, we need to solve for F.
f=4(s-65)+10
here, we use the distributive property to get rid of the parenthesis.
f=4s-260+10
and simplifying gets us
f=4s-250
wala! We are now in slope intercept form!

- anonymous

From this we can see that the slope of this line is 4, and the y intercept is (0, -250)

- anonymous

additionally, it is easy to plug in 78 for s and find f.

- anonymous

f=4(78)-250
f=312-250
f=62

- anonymous

thank u but i have another problem

- anonymous

ok, go!

- anonymous

f=10(s-55)+40 ... s=67 & its the same way

- anonymous

Well, lets do this one together.

- anonymous

can you distribute out the 10?

- anonymous

if s=67 then 10*67 is 670 & 10*55 is 550 .. am i rite?

- anonymous

well, you want to get slope intercept first, so we don't have to deal with s=67 yet.
10(s-55)
simpilifies to
10s-550

- anonymous

i dont get it

- anonymous

f=10(s-55)+40
so we now have
f=10s-550 + 40

- anonymous

we want to simplify it first, then plug in s.

- anonymous

ohh okay! so with that wat do we do next

- anonymous

after you can't simplify it any more, you are in slope intercept form, and you can plug in s.

- anonymous

Continue the simplification. We have this:
f=10(s-55)+40
f=10s-550 + 40
You know what to simplify next, right?

- anonymous

actually no! i dont no math at all

- anonymous

*know

- anonymous

Well, you need to learn, and I'm afraid just giving you the answer won't help.

- anonymous

So, lets proceed.

- anonymous

If I have -550 + 40, how do you simpiify that?

- anonymous

will it be -510

- anonymous

Yep!

- anonymous

so the answer is f=10s-510 ... am i rite ?

- anonymous

Yes! You are getting it now!
f=10(s-55)+40
f=10s-550 + 40
f=10s-510
Now, we are completely simplified. It fits the form y=mx+b, or in this case f=ms+b, so we are in slope-intercept form.

- anonymous

Now what?

- anonymous

one min. i need tu see wat is next

- anonymous

ok now! it says that f = two equations at one time

- anonymous

erm, we can still plug in 67 on that other problem.

- anonymous

no! this is a whole different problem

- anonymous

but that is easy stuff, give me the system of equations real quick, then ill go to bed.

- anonymous

lets do the system of equations real quick

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