anonymous
  • anonymous
Write a function rule for the table. x f(x) –3 –6 –2 –4 –1 –2 0 0 f(x)=-2x f(x)=2x f(x)=x + 2 F(x) = x -2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@LynFran
anonymous
  • anonymous
@AngusV
anonymous
  • anonymous
@LynFran

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More answers

LynFran
  • LynFran
|dw:1442973478841:dw|do u see a trend??
anonymous
  • anonymous
add 2?
LynFran
  • LynFran
no -1+2=1 -2+2=0 -3+2=-1
anonymous
  • anonymous
ok?
LynFran
  • LynFran
how about multiply by 2
anonymous
  • anonymous
yeah
LynFran
  • LynFran
so -1*2=-2 -2*2=-4 -3*2=-6
anonymous
  • anonymous
so A?
LynFran
  • LynFran
no
anonymous
  • anonymous
ok. so what is it?
LynFran
  • LynFran
f(x)=-2x means f(0)=-2(0)=0 f(-1)=-2(-1)=2 f(-2)=-2(-2)=4 f(-3)=-2(-3)=6 this give positive values for the output(range/y-value)
LynFran
  • LynFran
and we need negative range
LynFran
  • LynFran
so which option is correct
anonymous
  • anonymous
A? or D?
LynFran
  • LynFran
cant be D...
anonymous
  • anonymous
a
LynFran
  • LynFran
no not a
LynFran
  • LynFran
a is f(x)=-2x
anonymous
  • anonymous
b
LynFran
  • LynFran
yes
LynFran
  • LynFran
post the other questions here let me see if i can answer it...
anonymous
  • anonymous
Suppose that y varies inversely with x. Write an equation for the inverse variation. y = 4 when x = 7 y = x/28 x = y/3 y = 3x y =28/x
LynFran
  • LynFran
y=k/x
LynFran
  • LynFran
4=k/7
LynFran
  • LynFran
4*7=k
anonymous
  • anonymous
c
LynFran
  • LynFran
no
LynFran
  • LynFran
what 4*7=??
anonymous
  • anonymous
28
LynFran
  • LynFran
yes so k=28
anonymous
  • anonymous
28/x
LynFran
  • LynFran
now y=k/x
LynFran
  • LynFran
sub ur k" value in ^^
anonymous
  • anonymous
d
LynFran
  • LynFran
yes thats correct
LynFran
  • LynFran
next question..
anonymous
  • anonymous
Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. A(n) = 1 + (n-1) (-5.7) 1, –16.1, –50.3 –5.7, –21.8, –51.3 0, –17.1, –51.3 1, –21.8, –56
anonymous
  • anonymous
Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. A(n) = 1 + (n-1) (-5.7) 1, –16.1, –50.3 –5.7, –21.8, –51.3 0, –17.1, –51.3 1, –21.8, –56
LynFran
  • LynFran
n represent first , fourth and tenth term so A(1)=1+(1-1)(-5.7) whats did u get for the 1st term likewise ; A(4)=1+(4-1)(-5.7) what did u get for the 4th term ...the 10th term can be done like the two above
anonymous
  • anonymous
Thats what I have a problem with. I either get b or d
LynFran
  • LynFran
no u get 1 and only...and its not b nor c ...
anonymous
  • anonymous
a or d
LynFran
  • LynFran
well we see that the first term is 1
LynFran
  • LynFran
the 4th term A(4)=1+(4-1)(-5.7) = 1+(3)(-5.7) what 3*-5.7=? then add 1 to answer in above step
anonymous
  • anonymous
17.1
anonymous
  • anonymous
16.1
anonymous
  • anonymous
A
LynFran
  • LynFran
3*-5.7=-17.1
LynFran
  • LynFran
-17.1+1=-16.1
anonymous
  • anonymous
Write a function rule for the table. x f(x) –1 0 0 1 1 2 2 3 f(x) = -1 - x f (x) = x-1 f (x)=x f (x)= x +1
LynFran
  • LynFran
what do u think??..
anonymous
  • anonymous
b or d
LynFran
  • LynFran
|dw:1442975332107:dw|
anonymous
  • anonymous
hmmm
LynFran
  • LynFran
cant be b
anonymous
  • anonymous
d?
LynFran
  • LynFran
yes it is
LynFran
  • LynFran
how much more problem we have??
anonymous
  • anonymous
Find the constant of variation k for the inverse variation. Then write an equation for the inverse variation. y = 5 when x = 7.5 k=15;xy=1.5 k=2.5;y=2.5/x k=37.5;y=37.5x k=37.5;y= 37.5/x
LynFran
  • LynFran
whats the inverse variation??
anonymous
  • anonymous
b
LynFran
  • LynFran
i need u to tell me the inverse variation formula...i give u it like 3 time already...
LynFran
  • LynFran
y=k/x
anonymous
  • anonymous
y=k/x
LynFran
  • LynFran
when y=5 , x=7.5 so substituting these values we get 5=k/7.5 5*7.5=k
anonymous
  • anonymous
37.5
LynFran
  • LynFran
yes 37.5=k
LynFran
  • LynFran
now the formula y=k/x sub our value for k" int it
anonymous
  • anonymous
y=37.5/x D?
LynFran
  • LynFran
yes
LynFran
  • LynFran
was that the last question??
anonymous
  • anonymous
Does the data in the table represent a direct variation or an inverse variation? Write an equation to model the data in the table. x 6 8 12 20 y 9 12 18 30 inverse variation; xy = 54 direct variation; y = 1.5x direct variation; y = 2/3x inverse variation; xy = 1.5
LynFran
  • LynFran
ok its not inverse varition
anonymous
  • anonymous
1.5X
LynFran
  • LynFran
yes
anonymous
  • anonymous
Find the range of f(x)=-2x-5 for the domain (-2,-1,1,2).\ (-1,-3,-7,-9) (-1,-3,7,9) (1,3,5,7) (-1,-3,3,5)
LynFran
  • LynFran
is this the last question??
anonymous
  • anonymous
yes
LynFran
  • LynFran
-1,-3,-7,-9
LynFran
  • LynFran
good night..off to bed
anonymous
  • anonymous
Thank you very much
LynFran
  • LynFran
welcome

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