All categories

3 years ago

Which set of ordered pairs represents a function?

Mathematics

2 answers:

Grace [21]3 years ago

6 0

Answer:

Step-by-step explanation:

First of all, we have to remember what's a function.

A function is actually a relation between two sets, where to every element of the first set (domain) is assigned ONLY ONE element of the second set (range).

If the relation assigns more than one range element to a domain element, such relation won't be a function.

So, in this case, we just have to see which set of ordered pairs is really a function.

You can observe that choice B. {(0, 0), (1, 2), (2, 4), (3, 4)}, represents a function, because to every domain element there's assigned only one range element. For x=0, there's y=0, x=1 with y=2, x=2 with y=4 and x=3 with y=4.

Therefore, the answer is B.

Bess [88]3 years ago

3 0

C, if the function rule is x + 1

You might be interested in

What is (3/4)³ in fraction form

suter [353]

27/64 . because you do 3/4 to the third power (3x) which gives you that

6 0

3 years ago

If 97 of 200 is 100% then how much of 200 is 112%

pickupchik [31]

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 112 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 112 is 100%, so we can write it down as 112=100%.
4. We know, that x is 200% of the output value, so we can write it down as x=200%.
5. Now we have two simple equations:
1) 112=100%
2) x=200%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
112/x=100%/200%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 200% of 112

112/x=100/200
(112/x)*x=(100/200)*x - we multiply both sides of the equation by x
112=0.5*x - we divide both sides of the equation by (0.5) to get x
112/0.5=x
224=x
x=224

now we have:
200% of 112=224

●I tried my best I was never good with percentages my least favorite.... Please let me know if you got it wrong. If you do I'm sorry.

3 0

3 years ago

-3/4(x-3)-5= 1/8 (x-1)

earnstyle [38]

I think it’s 1384939384$3

6 0

2 years ago

Read 2 more answers

Bryce spent $5.26 on some apples prices at $0.64 each and some pears priced at $0.45 each. at another store he could have bought

Reil [10]

Let the number of apples be x and that of pears be y, then:
0.64x + 0.45y = 5.26 . . . (1)
0.32x + 0.39y = 3.62 . . . (2)

(2) x 2 => 0.64x + 0.78y = 7.24 . . . (3)
(1) - (3) => -0.33y = -1.98
y = -1.98 / -0.33 = 6

From (2), 0.32x + 0.39(6) = 3.62
0.32x = 3.62 - 2.34 = 1.28
x = 1.28 / 0.32 = 4

Therefore, he bought 4 apples and 6 pears.

3 0

3 years ago

Can you please help me on this question 8(4-x)=7x+2

kati45 [8]

Answer:

2=x

Step-by-step explanation:

8(4-x)=7x+2

Distribute

32 - 8x = 7x+2

Add 8x to each side

32 - 8x+8x = 7x+8x+2

32 = 15x+2

Subtract 2 from each side

32-2 = 15x+2-2

30 = 15x

Divide each side by 15

30/15 = 15x/15

2 =x

5 0

3 years ago