Question

I really need help on Comparing functions giving medal to the person who helps the most ( more than one question)

Answer 1

Go ahead and shoot it, then.

Answer 2

Ya

Answer 3

Plug in the functions for \[y=\frac{ 1 }{ 2 }x-3\]

Answer 4

Just choose your favorite coordinates the line runs through. :P

Answer 5

I think it's B. ya tell me if I'm wrong please

Answer 6

No direct answers please...

Answer 7

Ok
I sill think thats it tho

Answer 8

Just plug in the x's and y's though. :)

Answer 9

ok

Answer 10

Which coordinates did you choose?

Answer 11

Axis

Answer 12

2,2

Answer 13

Ok.

Answer 14

Okay, so does \[2=\frac{ 1 }{ 2 }\times2-3\]

Answer 15

no it equals -2

Answer 16

Did we help.

Answer 17

Moji the answer hasn't been given. Please stop.

Answer 18

Sorry I still say it's B sorry

Answer 19

Yes, that's correct. We can rule out C. Now do the same with the table.

Answer 20

Which coordinates will you choose?

Answer 21

ok so startng with 0,2

Answer 22

^

Answer 23

Plug that into the equation... \[2=\frac{ 1 }{ 2 }\times0-3\]

Answer 24

Is that true?

Answer 25

no because it equals -3

Answer 26

Exactly, so we can rule out both A and C now. Let's find the equations for the graph and the table to see if they're equal.

Answer 27

Do you know how to find the slope?

Answer 28

\[slope=\frac{ y_{2}-x _{1} }{ x_{2}-y_{1} }\]

Answer 29

Choose two coordinate pairs from the table.

Answer 30

1,4

Answer 31

And the second pair?

Answer 32

2,8

Answer 33

\[x_{1}=1,y_{1}=4\]

Answer 34

\[x_{2}=2,y_{2}=8\]

Answer 35

Now, can you plug that into the equation for the slope for me?

Answer 36

And then give me the value for the slope

Answer 37

ok im a bit confused by the slope

Answer 38

sorry im not a math genius math is a very difficult subject for me

Answer 39

Rate of change of a graph is equal to it's slope/gradient.

Answer 40

oh ok i under what you mean