Question

Can someone help me to see if I got this right ?

Answer 1

what's your question?

Answer 2

I just posted it

Answer 3

ok one moment

Answer 4

The help video they just gave me doesn't even tell us how to even do that kind problem it's everything else but those kind of problems

Answer 5

I know it's going to be 1 but I can't just put 1

Answer 6

are you familiar with finding the slope?

Answer 7

Not asking for the slope though and no.

Answer 8

well with finding any linear function, you find the slope first

Answer 9

all linear equations are in the form y = mx+b

m = slope
b = y intercept

Answer 10

See the video didn't say that...

Answer 11

what is the video saying (summarize it the best you can)

Answer 12

It was in the help section when I clicked it and it's input output tables and she just shows you how to find the missing numbers nothing about what in my work this is the video https://www.youtube.com/watch?v=y_aaOS6Q2qo

Answer 13

ok let me watch it

Answer 14

Frustrates me that they play students like this .They link a video and it's nothing on the problems about how to find N or anything like that ...

Answer 15

A big vague how she says "the rule is 3" at 41 seconds

Answer 16

Yea but when I do what she does it tells me I'm wrong on almost every single one I have to use those signs that you see on the right hand side of the picture.

Answer 17

ok so the video doesn't help with finding the nth term

Answer 18

That's what I said lol

Answer 19

yeah I'm just confirming. Anyways, as the inputs increase by 1, what's going on with the outputs?

Answer 20

its decreasing

Answer 21

by how much?

Answer 22

By 1 so the answer is going to be 1

Answer 23

I want to put 1-n-1 but I can't or 1xn-1

Answer 24

the x values (the inputs) are increasing by 1
the y values (the outputs) are decreasing by 1 (so we say -1)

the slope is equal to the change in y over the change in x

\[\Large \text{Slope} = \frac{\text{change in y}}{\text{change in x}}\]

\[\Large \text{Slope} = \frac{-1}{1}\]

\[\Large \text{Slope} = -1\]

make sense?

Answer 25

so it would be -1 over 1?

Answer 26

yes which reduces to -1

Answer 27

so the final answer is -1 over 1 - 1? or just -1 over 1

Answer 28

-1 is just part of the answer

Answer 29

m = -1 is our slope. It tells us how things are changing

Answer 30

pick any pair of input and output values

say x = 1 and y = 5

we will plug m = -1, x = 1 and y = 5 into y = mx+b and solve for b

Answer 31

y = mx+b

y = -1*x+b ... replace m with -1

y = -1*1+b ... replace x with 1

5 = -1*1+b ... replace y with 5

now solve for b

Answer 32

6?

Answer 33

yep

Answer 34

m = -1 and b = 6

so y = mx+b turns into y = -1*x + 6 which is simplified to y = -x+6

Answer 35

now if you replace the x with n (changing variables is perfectly valid)

we go from `-x+6` to `-n+6`

Answer 36

so the final answer is -n+6?

Answer 37

so the nth term is `-n+6`

example: replace n with 4 and you'll get

`-n+6=-4+6 = 2` which is exactly the output for the input of 4

Answer 38

correct

Answer 39

Thank you!

Answer 40

you're welcome