Question

help please?? :c

Find the range of f(x) = -x + 4 for the domain (-3, -2, -1

Answer 1

Domain is all the x values, and Range is all the why values. Substitute x with the set you have. Example: f(-3) = -(-3) + 4

Answer 2

*y values.

Answer 3

I don't understand this at all

Answer 4

f(x) = -x + 4 is the same as y = -x + 4

Answer 5

the choices are
7, 6 5, 3
-7, -6, -5, 3
7, 6, 5, 4
-7,-6,-5,-4

Answer 6

Example: Domain: {-3, -2, -1, 0} --- Range: {?}
f(-3) = -(-3) + 4 = (3) + 4 = 7
Range for -3 is 7.

Answer 7

It's best if you try it out. It'll allow you to get the grip on things :)

Answer 8

f(x) = -x + 4
Keep replacing x with the value provided in the domain until you have all range.

Answer 9

Yes :)

Answer 10

-(x) = -1 (x)

Answer 11

okay so I just tried.. would it be
7, 6 5, 3

Answer 12

so 7, 6, 5, 4 ?

Answer 13

Correct :)

Answer 14

incorrect >.<

Answer 15

oh okay

Answer 16

@NeedHelp__ You sure? I'm assuming there was a 0 since you have 4 numbers in your options.

Answer 17

yeah there was but I need help with another problem if you could help :)

Answer 18

Evaluate f(x) = -x2 - 4 for x = -3
a. -9
b. -13
c. 1
d. -1

Answer 19

yes I do

Answer 20

f(x) = -1[(-3)(-3)] - 4

Answer 21

solve what's in the parenthesis ?

Answer 22

yes

Answer 23

wouldn't that cancel out?

Answer 24

Nope, (-3)(-3) = 9 so:
f(x) = -1[9] - 4

Answer 25

a negative multiplied by a negative = a positive.

Answer 26

oh yeah >.< okay

Answer 27

Since exponents is just a means of saying how many times a number multiply by itself, all even exponents of a negative number will give a positive. All odd exponents will give a negative number.

Answer 28

\[-x ^{2} = x; -x ^{3} = -x\]

Answer 29

So what's the answer?

Answer 30

-9?

Answer 31

Go on: f(x) = -1[9] - 4

Answer 32

1?

Answer 33

f(x) = -9-4

Answer 34

Oh.. >.< -13

Answer 35

correct :)

Answer 36

evaluate F(x) = -2x - 5 for x = 3
a. -11
b. 11
c. 1
d. -6

Answer 37

same as before :) Replace x with 3 then PEMDAS

Answer 38

I think its -6 but im sure im wrong

Answer 39

Nope

Answer 40

I mean if you just mean -2x then yes

Answer 41

11?

Answer 42

f(x) = -6-5

Answer 43

oh -11

Answer 44

correct :)

Answer 45

evaluate f (x) = 1/4x for x = -5
A. -4/5
B. -1 1/4
C. -1/20
D. 20

Answer 46

Does the equation look like so: \[f(x) = \frac{ 1 }{ 4x }?\]

Answer 47

yes the x is separate though

Answer 48

Like this: \[f(x) = \frac{ 1 }{ 4 }x\]

Answer 49

?

Answer 50

yes

Answer 51

Multiply x with 1/4.

Answer 52

Basically do this: Since all whole numbers, such as 1, 2, 3, are simply \[\frac{ a }{ 1 }\] then when multiplying a whole number with a fraction the equation would look like so:\[\frac{ 1 }{ 4 } (\frac{ x }{ 1 }) = \frac{ 1 }{ 4 } (\frac{ -5 }{ 1 }) = \frac{ 1(-5) }{ 4(1) }\]

Answer 53

-4/5?

Answer 54

You got them backwards.

Answer 55

-5/4 sorry

Answer 56

Yup.

Answer 57

but that's not an option

Answer 58

it is :)

Answer 59

no the only one that has those numbers is A which is -4/5 >.<

Answer 60

Improper fractions are rational numbers where the numerator is greater than the denominator. Improper fractions can be rewritten as a mixed number –an integer plus a proper fraction. An improper fraction represents a number greater than one.

Answer 61

http://www.mathsisfun.com/numbers/images/fraction-types.gif

Answer 62

20??

Answer 63

"/" This donates division.

Answer 64

im confused

Answer 65

5 divided by 4?

Answer 66

1.25

Answer 67

0.25 in fractions?

Answer 68

\[\frac{ 1 }{ 2 } = 0.5\]

Answer 69

1 divided by 2 = 0.5

Answer 70

1 divided by 4 = 0.25

Answer 71

Answer: \[-1\frac{ 1 }{ 4 }\]

Answer 72

25/100

Answer 73

25/100 divide both by 25 so that the numerator is 1.

Answer 74

You'll get 1/4

Answer 75

Simpler would have been to divide 5 with 4 and keep the remainder as a fraction.

Answer 76

Example: \[\frac{ 34 }{ 7 } = 4 \frac{ 6 }{ 7 }\]

Answer 77

Since 34/7 = 4 r 6

Answer 78

Got it?

Answer 79

yes thanks this is the last one c:
f(x) = -4x - 5 for x = -1
A. -1
B. -9
C. 1
D. 4

Answer 80

It's the same as before. I believe, you can try this on your own.

Answer 81

B?

Answer 82

@Sadworld

Answer 83

Try it again. Show me your steps, so I can show you were you got it wrong.

Answer 84

i see what i did wrong now i multiplied where i wasn't suppose to

Answer 85

@NeedHelp__ yes :)

Answer 86

\[f(-1)=-4(-1)-5\]

Answer 87

Actually you added where you suppose to not.

Answer 88

so wat u get? @NeedHelp__

Answer 89

two negatives give a positive.

Answer 90

1?

Answer 91

4-5?

Answer 92

=-1(-4)-5
=4-5
=?
solve it

Answer 93

Previously, you had the same problem. It's the same as before.

Answer 94

I quote: "f(x) = -x + 4"

Answer 95

so it would be negative one

Answer 96

yes.

Answer 97

thanks c: