## goldyyy Group Title anybody wanna help? one year ago one year ago

1. goldyyy Group Title

2. goldyyy Group Title

?

3. Heyy_Girl_Heyy Group Title

The answer is D. I know this because all you have to do is use a calculator, and fill in the x and y values in the equation from your answers, and see which one adds upp..(:

4. tanvirms Group Title

in an ordered pair, the first number is the value of x and the second one is y, so, just put the value of x and y and see which gets u 5 ..... *sshhh* its the last one :P

5. goldyyy Group Title

ok thanks! i have more questions if you want?! :)

6. Heyy_Girl_Heyy Group Title

You should totally give me best response and I will help you(:

7. tanvirms Group Title

@Heyy_Girl_Heyy errmm...u might wanna check your calculator again, its not D.

8. goldyyy Group Title

wait so is it the last one? @Heyy_Girl_Heyy @tanvirms

9. Heyy_Girl_Heyy Group Title

Umm, yeah. It kinda is

10. goldyyy Group Title

D?

11. tanvirms Group Title

yes.... 2.(3) + (-1) = 5 or, 6-1=5 or, 5=5

12. Heyy_Girl_Heyy Group Title

Yes. Fill in the numbers and see what you get.

13. Heyy_Girl_Heyy Group Title

So @tanvirms , How was I wrong?

14. tanvirms Group Title

@Heyy_Girl_Heyy its the last one, E :) put the values yourself and check.

15. Heyy_Girl_Heyy Group Title

Yeah, that's what I said.

16. goldyyy Group Title

YOU GUYS ARE CONFUSING ME lol

17. Heyy_Girl_Heyy Group Title

The answer is the last equation

18. tanvirms Group Title

@Heyy_Girl_Heyy hey im totally sorry :P i messed it up with someone else's question with 5 options....it has 4...sorry!!!!

19. AngelicDragon Group Title

OMG peoples. It's (3,-1)

20. Heyy_Girl_Heyy Group Title

Lol, you're okay. I understand..

21. goldyyy Group Title

ahahha anyways here's the 2nd question

22. Heyy_Girl_Heyy Group Title

(2,-2)

23. AngelicDragon Group Title

2,-2

24. Heyy_Girl_Heyy Group Title

I got this.

25. AngelicDragon Group Title

LOL!! I sent when yours came in

26. tanvirms Group Title

@goldyyy seriously?? just count!!! 2 on the right means 2, and two down means -2, so its (2,-2)

27. AngelicDragon Group Title

LOL!!!

28. goldyyy Group Title

number 3................ and @tanvirms i wasn't looking at the questions i'm just posting them :P

29. Heyy_Girl_Heyy Group Title

@goldyyy , do you go to Connections Axademy?

30. tanvirms Group Title

@goldyyy :P if you look at em, im sure you wont find any that u cant solve.

31. goldyyy Group Title

i go to ohio virtual academy @Heyy_Girl_Heyy

32. AngelicDragon Group Title

I'm gonna agree with @tanvirms on this at least look at em first

33. Heyy_Girl_Heyy Group Title

It is just like the other problem, figgure it out/

34. Heyy_Girl_Heyy Group Title

Just fill in the answer choices into the x and y values. See which one adds up.

35. goldyyy Group Title

sorryyyy wasn't looking at them :/ but i'll look at 'em now and i'll post the ones i don't know

36. Heyy_Girl_Heyy Group Title

Okay.

37. goldyyy Group Title

well idk this one cuz i don't get slopes :/

38. Heyy_Girl_Heyy Group Title

I can explain slopes if you want me to

39. Heyy_Girl_Heyy Group Title

I know the answer, but I want to make sure you UNDERSTAND the material.

40. goldyyy Group Title

okay

41. tanvirms Group Title

it ascends from left to right, which means it has a positive slope...with this info, u can eliminate 2 answer choices :) (elimination is a wonderful strategy for SAT)

42. AngelicDragon Group Title

rise/run from one point to the next: how many units up (if its down its negative) over how many units right (left means negative)

43. Heyy_Girl_Heyy Group Title

Okay, so when you are doing slope, you use rise over run. Rise is the up or down along the grid, and run is side to side across the grid. So you will measure you r rise )Up or down motion) as opposed to your run(Side to side motion) count how many there are and thats your answer

44. Heyy_Girl_Heyy Group Title

O meant how ever many units up or down and across from each point is your answer.

45. goldyyy Group Title

is it 4?

46. AngelicDragon Group Title

equation for slope: $m = \frac{ y_{2}–y_{1} }{x_{2}–x_{1}}$

47. Heyy_Girl_Heyy Group Title

No, it will be in the form of a frac tion

48. goldyyy Group Title

so is it always in fraction form?

49. Heyy_Girl_Heyy Group Title

Most times.

50. goldyyy Group Title

1/4?

51. Heyy_Girl_Heyy Group Title

Yeah.!

52. tanvirms Group Title

it doesnt need to be fraction...it can be any number.

53. Heyy_Girl_Heyy Group Title

Well, in this case it would be a fraction, correct?

54. tanvirms Group Title

yup...basically, when the run is greater than the rise, it has a chance to be a fraction.

55. goldyyy Group Title

and for number 3, i tried all the answers but they all equaled 24 or -24 and 26 or -26

56. goldyyy Group Title

yes

57. Heyy_Girl_Heyy Group Title

hmm, the same thing happened with me. I am not sure.

58. tanvirms Group Title

intercept is the point where the straight line cuts the axis...so, x intercept means that value of x for which y=0, and y intercept means that value of y for which x=0....try solving

59. tanvirms Group Title

wait i'll show u...

60. Heyy_Girl_Heyy Group Title

No, she is tal;king about #3 @tanvirms

61. tanvirms Group Title

that's what im talking about too

62. goldyyy Group Title

would it be B because the answer is -12 and B's answer is -24 which is double?

63. tanvirms Group Title

2x-3y=-12, or, -3y=-2x-12 pr. 3y=2x+12 or, y=(2x+12)/3 now, find that value of x for which y would be 0. in this case, it is -6.... (-12+12)/3=0 similaryl, 2x=3y-12 or, x=(3y-12)/2 for y=4, x=0....so the correct answer is B,

64. goldyyy Group Title

yes so i was right! what about these?

65. goldyyy Group Title

last one got cut off so here

66. tanvirms Group Title

for the first one, do that same as @Heyy_Girl_Heyy taught u a while ago... for the second one, all u have to do is get the equation in y=mx+c form so, 4x+9y=36 or, 9y=-4x+36 or, y=-4/9.x + 36/9 or, y=-4/9.x+4

67. goldyyy Group Title

68. goldyyy Group Title

69. goldyyy Group Title

70. goldyyy Group Title

71. goldyyy Group Title

72. goldyyy Group Title

73. goldyyy Group Title

@Heyy_Girl_Heyy @tanvirms @AngelicDragon ?? :D

74. Heyy_Girl_Heyy Group Title

I am kinda busy right now.

75. AngelicDragon Group Title

7. is b

76. AngelicDragon Group Title

sorry i was busy a second ago

77. goldyyy Group Title

ohh ok @AngelicDragon thanks

78. AngelicDragon Group Title

You know if you have a graphing utility on your computer that can be a lot of help to you with a lot of these

79. goldyyy Group Title

i don't have one :/ i have to do something real quick so i'll be back in like 20 minutes

80. AngelicDragon Group Title

that's a good way to get them done fast in fact that's what I do

81. goldyyy Group Title

yeah :)

82. AngelicDragon Group Title

you can use Geogebra it's an online graphing thing

83. goldyyy Group Title

brb in 20 mins! :)

84. goldyyy Group Title

back! @AngelicDragon

85. tanvirms Group Title

Q.9---what is the relationship between these two lines: 3x+6y=8 y=2x-8 as i said, try to transform the equation into y=mx+b form, the second one is already done...lets go with the first one. 3x+6y=8 or, 6y=-3x+8 or, y= -3/6.x + 8/6 or, y= -1/2.x + 4/3 what u wanna look at now is the part with x (the 'm' part in y=mx+b) and in this case it is -1/2 (u have to take it with the sign)....it is the 'slope' in case of y=2x-8 slope, m is 2, right? whats the relationship between 2 and -1/2?? -1/2 is the reciprocal of 2 with the opposite sign (u know what a reciprocal fraction is, right?) when one straight line has a reciprocal slope with the opposite sign in respect to another straight line, they are perpendicular to each other. i hope this explains.

86. tanvirms Group Title

Q. which has a slope of 5 and y intercept of -3? all of these equations are in intercept form. ( y=mx+b as i said) m is the slope b is the y intercept so what u are looking for is an equation that has m=5, b=-3 look for it!!

87. tanvirms Group Title

Q. which one is graph of inequality y<2x+3 the shaded part is the part that denotes the inequality, i guess u already know that. if there's a straight line between the shaded part and the white part, there should be a = sign in the equation....you dont see any '=' in the equation, do you? in that case, you can just eliminate B. now, the best way is to take a (x,y) pair. and the easiest to work with is the (0.0) pair. substitute the values of x and y here. 0<2.0+3 or, 0<3 which is totally true (0,0) lies in the shaded part of C, so C is the answer. sometimes, you might also have to check some other pairs (1,1) or something else too, just to be sure. if you'r wondering whether A is correct or not, take a point that lies in the shaded part, lets say it is (-2,4) (its in the shaded part, check out) 4<2.(-2)+3 or, 4<-4+3 or, 4<-1 apparently, 4 can never be less than -1. so there you go...its not A, not B...its C.

88. tanvirms Group Title

i believe we already worked on 5 and 6 a while ago...check. Q.7---a line that passes through (-2,1) and has a slope of 5. if my earlier explanations were clear enough, i believe you already know that only option A and B has a slope of 3 now, check them with the pair (-2,1). you wanna put x=-2 and y=1 and see if its true. for A, (1+1)=3(-2+2) or, 2=0 TOTALLY WRONG! for B, (1-1)=3(-2+2) or 0=0 there you go!! Q.8: what is the slope of the line parallel to 2x-3y=6 find the slope first. -3y=-2x+6 or, 3y=2x-6 or, y=2/3.x-2 so, the slope is 2/3, right?? remember what i told you a while ago? perpendicular lines have a reciprocal and opposite signed slope..... in case of parallel lines, they have the same slope. so, the answer is 2/3..

89. tanvirms Group Title

finally, i'm sorry for the late replies. i'm from Bangladesh and our time zones are totally different. it was like 2 AM in the morning and i went to bed (not to mention, i got struck by AlterBridge too. listened to them over and over again till 4 xD ).