Question

The graph shows the relationship between the number of months different students practiced tennis and the number of matches they won:

The title of the graph is Tennis Matches. On x axis, the label is Number of Months of Practice. On y axis, the label is Number of Matches Won. The scale on the y axis is from 0 to 22 at increments of 2, and the scale on the x axis is from 0 to 12 at increments of 2. The points plotted on the graph are the ordered pairs 0, 2 and 1, 5 and 2, 8 and 3, 9 and 4, 10 and 5, 12 and 6, 13 and 7, 16 and 8,17 and 9, 18 and 10,20. A straight line is drawn joining the ordered pairs 0, 3.3 and 2, 6.8 and 4, 10 and 6, 13.5 and 8, 17 and 10, 20.5.

Part A: What is the approximate y-intercept of the line of best fit and what does it represent? (5 points)

Part B: Write the equation for the line of best fit in the slope-intercept form and use it to predict the number of matches that could be won after 13 months of practice Show your work and include the points used to calculate the slope. (5 points)

Answer 1

is this a test?

Answer 2

no
i just ask questions to challenge people

Answer 3

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
no
i just ask questions to challenge people
\(\color{#0cbb34}{\text{End of Quote}}\)
so u dont need help..?

Answer 4

do i get 5 points for finding the right answer? ;)

Answer 5

and can u attach a pic of the graph

Answer 6

sure
how

Answer 7

You press attach file.

Answer 8

There should be a button that says `attach file` so just click on it and upload the pic

Answer 9

The human calculator is correct.

Answer 10

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Trickjoker
The human calculator is correct.
\(\color{#0cbb34}{\text{End of Quote}}\)
yea B)

Answer 11

Bababoi.PNG

Answer 12

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
Bababoi.PNG
\(\color{#0cbb34}{\text{End of Quote}}\)

Answer 13

flvs?

Answer 14

How you know lol

Answer 15

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
How you know lol
\(\color{#0cbb34}{\text{End of Quote}}\)
I go there too and.. that's a test, and we cant help with those

Answer 16

She's a human calculator.

Answer 17

I know i already did that test

Answer 18

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
I know i already did that test
\(\color{#0cbb34}{\text{End of Quote}}\)
then why do u need our help?

Answer 19

i dont need help, I am challenging yall

Answer 20

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
i dont need help, I am challenging yall
\(\color{#0cbb34}{\text{End of Quote}}\)
this site is for helping people with homework, not challenging us xD

Answer 21

oh

Answer 22

well then dont answer

Answer 23

smh, lets start with Part A, what do u think the y-intercept is?

Answer 24

(0,3.5)

Answer 25

Correct, what do u think it represents-?

Answer 26

where the line of best fit starts

Answer 27

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
where the line of best fit starts
\(\color{#0cbb34}{\text{End of Quote}}\)
good try but no.. here's a hint

With ____ number of matches won, the students had ____ months of practice.

Answer 28

oh im dumb lol

Answer 29

what do u think u should put?

Answer 30

x

Answer 31

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
(0,3.5)
\(\color{#0cbb34}{\text{End of Quote}}\)
use these numbers to fill in the blanks

Answer 32

oh

Answer 33

With 3.5 number of matches won, the students had 0 months of practice.

Answer 34

yessss

Answer 35

Yep!

Answer 36

Part b now, so first.. do u know how to do slope?

Answer 37

y2-y1/x2-x1

Answer 38

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
y2-y1/x2-x1
\(\color{#0cbb34}{\text{End of Quote}}\)
yes so choose 2 points from the graph... (2,8) and (5,12) can work

Answer 39

ok so (2,8) and (5,12)

Answer 40

My mistake, for Part A, its would be with 0 months of practice the students won 3.5 matches.

Answer 41

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
ok so (2,8) and (5,12)
\(\color{#0cbb34}{\text{End of Quote}}\)
yes, so now plug in the numbers from the formula

Answer 42

oh i had that at first then realized i dont think having that many months would leave you with 0

Answer 43

I haven't even been joined for 20 minutes, and you all are already helping with me so much. Thank you!

Answer 44

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
oh i had that at first then realized i dont think having that many months would leave you with 0
\(\color{#0cbb34}{\text{End of Quote}}\)
yea, my bad-

Answer 45

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Trickjoker
I haven't even been joined for 20 minutes, and you all are already helping with me so much. Thank you!
\(\color{#0cbb34}{\text{End of Quote}}\)
np, and welcome to qc!

Answer 46

no its my fault to

Answer 47

its ok, lets get back on track.. plug in the numbers from the formula

Answer 48

Part A: (0,3.5) With 0 matches won students would have 3.5 months of practice.

Part B: y = (7/4)x13+3

That is what I have

Answer 49

sorry for trying to trick you lol

Answer 50

saying for a challenge

Answer 51

trickjokering you

Answer 52

ah ok, I think you are correct, y = 7/4(13) + 3

Answer 53

i see
that took a while, do you just type slower then others?

Answer 54

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
i see
that took a while, do you just type slower then others?
\(\color{#0cbb34}{\text{End of Quote}}\)
no lol I had to rethink and redo the problem to make sure I was correct

Answer 55

oh

Answer 56

yea

Answer 57

You can close this since you got ur answer! :D

Answer 58

@carmelle Ok thx but how?

Answer 59

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
@carmelle Ok thx but how?
\(\color{#0cbb34}{\text{End of Quote}}\)
by pressing the close button

Answer 60

it isnt working

Answer 61

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
it isnt working
\(\color{#0cbb34}{\text{End of Quote}}\)
oh :/

Answer 62

is this a normal problem?

Answer 63

Yeah.

Answer 64

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
is this a normal problem?
\(\color{#0cbb34}{\text{End of Quote}}\)
no, its not, try reloading

Answer 65

still hasnt worked @carmelle

Answer 66

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
still hasnt worked @carmelle
\(\color{#0cbb34}{\text{End of Quote}}\)
oof

Answer 67

just tag a mod they should be able to close it for you or report

Answer 68

ok, @Angle can u close this please?

Answer 69

idk any mods

Answer 70

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Wadfasd
idk any mods
\(\color{#0cbb34}{\text{End of Quote}}\)
someone closed it so dont worry

Answer 71

oh its already closed