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## igloo3000 4 years ago I need help with this wkst https://docs.google.com/viewer?a=v&pid=sites&srcid=c2R1aHNkLm5ldHxtcnMtcm9ic29uLXMtd2VicGFnZXxneDoyNmRkOGMyNGRiZTU1ZGQ

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1. y2o2

which question ?!

2. waheguru

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

3. igloo3000

all of them

4. igloo3000

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

5. igloo3000

1-4 first

6. y2o2

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

7. igloo3000

for the first one?

8. igloo3000

can you do the second one

9. y2o2

no this is no.4

10. y2o2

Ok, i'll solve you the second one

11. igloo3000

wait

12. igloo3000

can you solve 1-4?

13. y2o2

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

14. y2o2

i'll solve the second

15. y2o2

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

16. igloo3000

how did you do it?

17. 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"

18. igloo3000

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

19. y2o2

yeah , sure

20. igloo3000

thanks

21. igloo3000

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

22. igloo3000

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

23. igloo3000

for number 1

24. y2o2

No, that's wrong answer

25. y2o2

try again

26. y2o2

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

27. y2o2

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

28. igloo3000

is the slope correct?

29. igloo3000

what is not correct?

30. igloo3000

ohh I see

31. y2o2

no it's not

32. igloo3000

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

33. y2o2

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

34. igloo3000

is everything else correct?

35. 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

36. igloo3000

ok

37. igloo3000

let's keep going!

38. igloo3000

number 3

39. y2o2

will you solve it ?!

40. igloo3000

yes

41. igloo3000

and you can check

42. y2o2

Ok, go on

43. igloo3000

ok

44. igloo3000

can you tell me the answer so I can check?

45. y2o2

no , you tell me your answer

46. igloo3000

ok

47. igloo3000

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

48. y2o2

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

49. igloo3000

it's rise over run

50. igloo3000

found it

51. igloo3000

nope I haven't

52. igloo3000

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

53. 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

54. y2o2

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

55. igloo3000

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

56. y2o2

yes it's for no. 3

57. igloo3000

awww

58. igloo3000

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