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arsen [322]
2 years ago
11

Can someone explain what is domain and range? Gcse math level please

Mathematics
1 answer:
vodka [1.7K]2 years ago
3 0
The domain and range are defined for a relation and they are the sets of all the x-coordinates and all the y-coordinates of ordered pairs respectively. For example, if the relation is, R = {(1, 2), (2, 2), (3, 3), (4, 3)}, then:
Domain = the set of all x-coordinates = {1, 2, 3, 4}
Range = the set of all y-coordinates = {2, 3} take a look at the picture e.g Here, the domain is the set {A,B,C,E}
{
A
,
B
,
C
,
E
}
. D
D
is not in the domain, since the function is not defined for D
D
.

The range is the set {1,3,4}
{
1
,
3
,
4
}
. 2
2
is not in the range, since there is no letter in the domain that gets mapped to 2
2
.
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See the attachment

Step-by-step explanation:

It is convenient to use a spreadsheet or graphing calculator for this.

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Can someone help me with my work
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answer to 1.d. is neither

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Given the sequence 8, 16, 32, 64, ..., which expression would give the thirteenth term?
mrs_skeptik [129]
8, 16, 32, 64,…
 ×2  ×2  ×2

a_{n} = a_{1} * r^{n - 1}
a_{n} = 8 * 2^{13 - 1}
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a_{n} = 8 * 4096
a_{n} = 32768

           First Term: 8
      Second Term: 16
          Third Term: 32
        Fourth Term: 64
           Fifth Term: 128
          Sixth Term: 256
     Seventh Term: 512
       Eighth Term: 1024
         Ninth Term: 2048
        Tenth Term: 4096
   Eleventh Term: 8192
     Twelfth Term: 16384
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The\ expression\ that\ would\ give\ the\ thirteenth\ term\ of\ the\ problem\ would\ be\ the\ equation\ of\ the\ geometric\ sequence,\ which\ is\ equal\ to\ a_{n} = a_{1} * r^{n - 1}.

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3 years ago
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Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
Lunna [17]

Answer:

<u>3 days</u>, <u>27</u>

Step-by-step explanation:

After 3 days :

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Darya [45]

Answer:

Answer:

f(x) = - 4x + 4

Step-by-step explanation:

Step-by-step explanation:

A linear function has the form

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a = - 4, thus

f(x) = - 4x + 4

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3 years ago
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