I need help with this wkst https://docs.google.com/viewer?a=v&pid=sites&srcid=c2R1aHNkLm5ldHxtcnMtcm9ic29uLXMtd2VicGFnZXxneDoyNmRkOGMyNGRiZTU1ZGQ

- igloo3000

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- chestercat

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- y2o2

which question ?!

- waheguru

remember to find the y intercept look where the line intercets the y axies

- igloo3000

all of them

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## More answers

- igloo3000

can you help me with y intercept the slope and the equation though

- igloo3000

1-4 first

- y2o2

Slope = (-2/3)
Y-int = 2
Equation : "y = (-2/3)x + 2"

- igloo3000

for the first one?

- igloo3000

can you do the second one

- y2o2

no this is no.4

- y2o2

Ok, i'll solve you the second one

- igloo3000

wait

- igloo3000

can you solve 1-4?

- y2o2

No, you have to do them by yourself....i'm just helping.

- y2o2

i'll solve the second

- y2o2

2-
Slope = 1
Y-int = 0
Equation: y=x

- igloo3000

how did you do it?

- y2o2

as you can see, the st.line is passing throw (0,0)
this means that the y-int = 0
So the equation is "Y = aX"
choose any two points on the graph and substitute with them in the equation
let it be (2,2) for example:
2 = a * 2
so a = 1
so the equation is : "y = x"

- igloo3000

can I solve one then see if I get it right?

- y2o2

yeah , sure

- igloo3000

thanks

- igloo3000

wait the y-int that I learned was you always have to put 0 then the number

- igloo3000

is the answer 1, (0,1), y=x+1?

- igloo3000

for number 1

- y2o2

No, that's wrong answer

- y2o2

try again

- y2o2

you can get they y-int by letting x=0

- y2o2

y-int is the point of intersection between the St.line and the y-axis

- igloo3000

is the slope correct?

- igloo3000

what is not correct?

- igloo3000

ohh I see

- y2o2

no it's not

- igloo3000

is the slope -4, the y-int (0, 3 1/2), and the equation y=-4x+ 3 1/2?

- y2o2

actually , the graph is not so clear , so i considered the y-int as (0,3)

- igloo3000

is everything else correct?

- y2o2

the answer of no 1 will be:
Y-int = (0,3)
Slope = -3
Equation : "y = -3x+3"
*of course this answer is by considering the y-int is 3 not 3.5 or else

- igloo3000

ok

- igloo3000

let's keep going!

- igloo3000

number 3

- y2o2

will you solve it ?!

- igloo3000

yes

- igloo3000

and you can check

- y2o2

Ok, go on

- igloo3000

ok

- igloo3000

can you tell me the answer so I can check?

- y2o2

no , you tell me your answer

- igloo3000

ok

- igloo3000

slope is 1
y-int is (0,-2)
equation is y=1x-2

- y2o2

you got the y-int right, but you mistaken the slope

- igloo3000

it's rise over run

- igloo3000

found it

- igloo3000

nope I haven't

- igloo3000

how do you do slope? cause I know it's rise over run?

- y2o2

yes it's, but in mathematical words...it's change y over the change of x
so you just pick any two points
e.g : (1,0) & (0,2) [i chose them to only ease the calculations]
so the slope = (\[(2-0) \over (1-0) \]
which is equal to -2

- y2o2

sorry it's (0-2) not (2-0)

- igloo3000

is that the answer to number 3 for the slope or is that an example?

- y2o2

yes it's for no. 3

- igloo3000

awww

- igloo3000

the website is restarting soon

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