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Sphinxa [80]
3 years ago
5

Which relation represents a function?

Mathematics
1 answer:
Airida [17]3 years ago
4 0
<h3>Answer: Choice C</h3><h3>{ (-2,2), (0,2), (7,2), (11,2) }</h3>

Here we don't have any repeated x values.

In choice A, x = 2 repeats. In other words, x = 2 leads to multiple y outputs. So this is not a function. Choices B and D are similar stories. A function is only possible if every x leads to exactly one y value only. The graph must pass the vertical line test.

Side note: the y values can repeat, but the function won't be one-to-one.

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Which equation and solution represents each situation? Solutions may be rounded to the nearest tenth. What number is 74% of 58?
Zolol [24]

Given:

A number is 74% of 58.

To find:

The number.

Solution:

Let the unknown number be n.

The number n is 74% of 58.

n=\dfrac{74}{100}{58}

n=0.74\times 58

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The required equation is n=0.74\times 58 and the solution (unknown number) is n=42.92.

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erma4kov [3.2K]

Answer:

y = 3

x = 2

Step-by-step explanation:

x+y=5  ==   -2x - 2y = -10

2x-y = 1 ==  2x - y = 1    +

                  -------------------

                  -3y = -9

                  <u>y = 3</u>

x + y = 5

x + 3 = 5

<u>x = 2</u>

8 0
3 years ago
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PSYCHO15rus [73]

Answer:

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Unit 3 | Lesson 9
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The formula d = rt gives the distance traveled in time t at rate r. A bicyclist rides for 1.5 hours and travels 25 miles. 
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r= 25
t=1.5
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D.
37.5 miles per hour
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Six is fifteen less than three time a number
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Answer:

3x-15=6

Step-by-step explanation:

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