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│x – 5│ = 3
a. x = 8 and x = 2
b. x = 8 and x = –2
c. x = 8
d. x = 2
 one year ago
 one year ago
│x – 5│ = 3 a. x = 8 and x = 2 b. x = 8 and x = –2 c. x = 8 d. x = 2
 one year ago
 one year ago

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seidi.yamautiBest ResponseYou've already chosen the best response.1
if x5 >0 , then x5=3 if x5 <0, then x(5)=3; x+5=3
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
since x is a variable, you can't say x5 is > or < than 0, so you must consider both cases (unless the question tells you if it is < or >)
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
haha right. It's a
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
linear function means the graph will be a straight line so, if you take the same deltax for diferent x's, there should be the same deltay in both cases I guess it's a bit confuse  sorry I can't explain the right way cause my english is poor...
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
like if you pick up x1=1, y1=1 & x2=2, y2=3 for any other deltax = x2x1 = 1, there should be the same deltay = y2=y1 = 4
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
it is! plot the graph and you will see. Every point (x,y) is in an unique line
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
dw:1358481474606:dw
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
Tell whether the sequence is arithmetic. If it is, what is the common difference? –12, –7, –2, 3, . . . (1 point) yes; 5 yes; 8 yes; 3 no
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
and you can even write the function, which is y=54x
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
that one is yes; 5 ?
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation. x y 3 6 6 18 8 24 (1 point) yes; y = 2x yes; y = 3x yes; y = 4x no; y does not vary directly with x
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
in this case, any member of the sequence is given by An= 12 + 5n
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
hahaha, calm down!
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
well, that's the same as the other
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
actually, it is yes
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
The table shows the height of a tree as it grows. What equation in slopeintercept form gives the tree's height at any time? Time (months) Height (inches) 2 14 4 23 6 32 8 41 y = 9x + 2 y = 9/2x + 5 y = 9/2x y = 5x + 9/2
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
(by the way, the previous one is d, sorry)
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
you need to find the slope which is deltay/deltax
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
y=ax+b a is the slope once you find it, just put any value for y from the tableand you get b
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
Write y = –2/5x – 3 in standard form using integers. 2x + 5y = –15 2x + y = –3 2x + 5y = –3 x + y = –15
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
it is (2/5)x , right?
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
just multiply everything by 5
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
thanks your helping so much
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
Write the equation of a line that is perpendicular to the given line and that passes through the given point. y = –1/3x + 5; (4, 3) y = –3x + 15 y = 3x – 9 y = –4x + 3 y = –1/3x – 11
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
you're welcome :)
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
aaaaaa, I forgot the rule
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
to be perpendicular, the multiplication of the slopes' values must be 1, is it right?
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
the equation you need to find is y=ax+b a.(1/3) = ? then substitute (4;3)
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
ah, the slope2 of a perpendicular line is 1/slope1
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
a1 the slope of a line a2 the slope of a perpendicular line then a2= 1/a1 or a1.a2=1
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
What is the solution of the system? y = x – 14 y = –4x + 11 (5, –9) 1 over 5 and – (69 over 5) 5 over 3 and – (37 over 3) – (3 over 5) and – (73 over 5)
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
subtracting the first by the second, you have 0=5x25 this gives you x=5
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
substitue x in any of the equations and you find y
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
idk where 0=5x25 is from :/
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
y=x14 y=4x+11 (minus) _____________ 0=x(4x)1411
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
or since y=y, then x14=4x+11
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
no, it's a, the simplest
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
Bradley and Ryan are having a contest to see who can collect the most bumper stickers. Bradley started with 23 bumper stickers and plans to add 4 each month. Ryan has 9 bumper stickers and plans to add 6 each month. After how many months will they have the same number of bumper stickers? (1 point) 10 months 2 months 7 months 51 months
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
a way to solve it is writing the equations of stickers collected by each of them
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
being m = months, then Bradley: Stickers=23+4m Ryan: Stickers=9+6m
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
it means BRadley has 23 stickers and owns 4more each month and Ryan has 9 stickers and owns 6 more each month
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
it is the same as the previous, and you can just write y=23+4x y=9+6x you want to know x
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
in this case, you don't want to know y
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
either, you could substitute the options in the formulas and see if they give the same number
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
Sure you know! Bradley: [number of stickers]=23+4x Ryan: [number of stickers]=9+6x
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
if you call number of stickers as 'y' then you see that y MUST be the same in both equations
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
and so the right hand sides of the equations
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
so 23+4x=9+6x and you just need to find x
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
the secret in this question is to transform words in equations, once you done that, you solve matematicaly (?)
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
haha thank you thank you
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
oh well, there's any other problem? I must go soon :P
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
k last one How many solutions does the system have? 12y = –3x + 20 y = –1/4x + 5/3 (1 point) one two infinite none i think its infinite?
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
but look at the system and you will see one is the same as the other
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
one equation is the same as the other
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
so you can't find just one value for (x,y) any x value gives an right y value
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
multiply the second by 12, and you will end up with 2 equal equations
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
no, it is infinite, as you said
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
you have 1 equation and 2 variables
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
any given value of x will result in a y or any y will result in a x
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
all of then right
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
What is the slope of the line that passes through the pair of points? (5, 7), (2, 1) 8/7 2 –8/7 1/2
 one year ago

chronicleBest ResponseYou've already chosen the best response.0
i still have to graph some questions but i will let you know
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
if you are not in a hurry, i can answer as soon as i come back
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
(71)/(25) or (17)/(52) You just need to use the correspondent positions to x's and y's values
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
like (y2y1)/(x2x1) or (y1y2)/(x1x2) but not (y2y1)/(x1x2) or (y1y2)/(x2x1)
 one year ago

seidi.yamautiBest ResponseYou've already chosen the best response.1
any other question, message me :) bye!
 one year ago
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