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lina2011 [118]
3 years ago
13

(don't understand but I think its easy)Which of the following relations is a function?

Mathematics
2 answers:
Gala2k [10]3 years ago
7 0

Answer:

  B. {(1, 7), (2, 8), (4, 5), (0, 0), (3, 5)}

Step-by-step explanation:

You are right, it is easy. Any relation with a repeated first value is not a function.

A has (-3, -1) and (-3, -3), so the value -3 is a repeated first value.

C has (2, 5) and (2, 3), so the value 2 is a repeated first value.

D has (5, 8), (5, 9), and (5, -3), so the value 5 is a repeated first value.

None of A, C, or D is a relation that is a function. The correct choice is B, which has first values 0, 1, 2, 3, 4 -- none of which is repeated.

_____

If you plot points with repeated first values, you find they lie on the same vertical line. If a vertical line passes through 2 or more points in the relation, that relation is <em>not a function</em>. We say, "it doesn't pass the vertical line test."

A relation must pass the vertical line test in order to be a function. This is true of graphs of any kind, not just graphs of discrete points.

Dmitriy789 [7]3 years ago
5 0

<u>Answer:</u>

The correct answer option is B. {(1, 7), (2, 8), (4, 5), (0, 0), (3, 5)}.

<u>Step-by-step explanation:</u>

We are to determine whether which of the given relations in the possible answer options is a function.

We know that the x values of a function cannot be repeated. It means that for each output, there must be exactly one input.

Therefore, we will look for the relation where no x value is repeated.

Function ---> {(1, 7), (2, 8), (4, 5), (0, 0), (3, 5)}

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Answer: 7quarters and 3 nickels

Step-by-step explanation:

7=$1.75 3=.15

6 0
3 years ago
The edges of a shoebox are measured to be 11.3 cm, 18.9 cm, and 29 cm. Determine the volume of the box retaining the proper numb
puteri [66]

The volume (V) is given in terms of length (L), width (W), and height (H) by the formula ...

... V = LWH

Substituting your dimensions, you have

... V = (11.3 cm)·(18.9 cm)·(29 cm) = 6193.53 cm³ ≈ 6200 cm³

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The factor 29 cm has 2 significant digits, so that is the precision required of the answer. It could also be written with less ambiguity as to precision as 6.2 L. (Trailing zeros to the left of the decimal point are always ambiguous when it comes to significant digits.)

7 0
2 years ago
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kirill [66]

Answer:

- 1 4/5

Step-by-step explanation:

-1 1/5 + - 3/5

Since the signs are the same, we add and take the sign

1 1/5 + 3/5

1 4/5

The sign is negative

- 1 4/5

On the number line start at - 1 1/5 and go to the left 3/5( since the sign is negative)  you will end up at - 1 4/5

8 0
3 years ago
Is the expression below completely factored? If not, complete the factorization.
Ket [755]

Answer:

A) No, because the greatest common factor is 8y?, and the completely factored form is 8y2(4y2 - 6y + 3).

Step-by-step explanation:

Considering the expression

4y(8y3 – 12y2 + 6y)

From the elements in the parenthesis, 2 and y can still be factored out such that what will be left of each element

8y3/2y = 4y2

12y2/2y = 6y

6y/2y = 3

Hence

4y(8y3 – 12y2 + 6y) = 4y*2y(4y2 - 6y +3)

= 8y2(4y2 - 6y + 3)

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3 years ago
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Margarita [4]

Answer:

They look similar but just rotated

Step-by-step explanation:

pls mark as brainliest

5 0
3 years ago
Read 2 more answers
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