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RSB [31]
3 years ago
13

Which relation is a function?

Mathematics
1 answer:
dimulka [17.4K]3 years ago
7 0
The definition of a function is that for each input, there is only one output. Thus, the answer to your question is A, as it is the only answer option that each input has only one output. In answer choice B, the input -1 has outputs of both -2 and -5. In answer choice C, the input 4 has outputs of both 3 and 0. Finally, in answer choice D, the input -4 has outputs of both -4 and 4. Therefore, answer A is the only function because it is the only option that follows the definition. Hope this helps! :)
You might be interested in
Can someone do this for me i don't get it.
zimovet [89]
1)
The answer is B, y=4x because the y column is always 4 times the x column

2)
Domain = (1,2)
Range = (5,6,7,8)
Function = there is no function because the x value has multiple y values associated with it

3) No
4) yes
5) Tia is correct because the y values are half of the x values
4 0
2 years ago
I would really appreciate it if someone could answer and explain this problem thanks :)
Oksana_A [137]

Answer:

it is A

Step-by-step explanation:

Vertical angles are angles that are opposite eachother

3 0
2 years ago
Kristi finds a shirt for $27.99 at the store.
Natalka [10]

Answer:

Kristi will pay $22.77 for the shirt.

Step-by-step explanation:

First, determine the sales price of the shirt. If the full price is $27.99, a 25% reduction is $7. Subtract the discount from the full price to get a sales price of $20.99 for the shirt.

Next, determine the amount of tax Kristi will pay for the shirt. In her state, the sales tax is 8.5% (0.085). Multiply $20.99 by 0.085 and you will see that the sales tax is $1.78. Add the amount of the tax, $1.78, to the sales price of the shirt, $20.99, and you will get $22.77 as the cost of the shirt after the sales tax is added.

7 0
3 years ago
Jane has 6 more than twice the number of pairs of shoes that Mary has.
goldfiish [28.3K]

Answer:

im not sure

Step-by-step explanation:

6 0
2 years ago
2(x + 4) − 1 = 2x + 7
Margarita [4]

Answer:

All real numbers are solutions to this problem.

Step-by-step explanation:

I) Simplify:

2(x + 4) - 1 = 2x + 7

x + 4 - 0.5 = x + 3.5 (Divide by 2)

x + 3.5 = x + 3.5 (Simplify <em>x + 4 - 0.5</em>)

x = x

II) Conclusion:

Any real number will work as a solution.

7 0
2 years ago
Read 2 more answers
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