Question

Linear Functions Part 2:

Answer 1

Is this about your last question?

Answer 2

Yes.

Answer 3

http://assets.openstudy.com/updates/attachments/58180d7be4b0b6ac77c03957-miss.rose-1477971332638-fsdfd.png

Answer 4

U mean this?
http://assets.openstudy.com/updates/attachments/58180d7be4b0b6ac77c03957-miss.rose-1477972106365-safdsf.png

Answer 5

Yes, sorry for the confusion

Answer 6

No problem :)

If you want to answer point b, this is what should you do:

first,
find the gradient using:
m = (y2-y1)/ (x2-x1)

second,
find the linear equation using
y2-y1 = m(x2-x1)

third,
check every variable if it's satisfied the linear equation,
using
y = weight
x = dosage

If you have do this all steps, you know the answer

Answer 7

Do you mean if you have to do all these steps, you know the answer?

Answer 8

yes, that's what I mean

Answer 9

okay, so the slope is 4.8.
y=2.5
x=12
so it would be set up like this:
2.5=4.8(12)+b

Answer 10

Is that correct?

Answer 11

what is b?

Answer 12

b is the y-intercept. But I don't know what that is.

Answer 13

Hmm,, we supposed to answer point b not point a right?

Answer 14

or you want we to answer point a too

Answer 15

wait do you mean question a & b. Cause I just need question b answered.

Answer 16

alright, did you already answer question a?

Answer 17

yes

Answer 18

They have a same slope?

Answer 19

yes

Answer 20

Wait. the teacher said I don't need to answer that question. Sorry, Can you help with some other questions?

Answer 21

That would be the answer for the first question on point b:
they relationship is linear because when we find the rate of change from one group to the next will get the same rate of change. So relation between weight and dosage gives a straight line when plotted on a graph.

Answer 22

If you want to answer the second question on point b, use formula:

y-y1 = m(x-x1)
with m is the slope, that is 4.8