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4 years ago

Which of the sets of ordered pairs represents a function?

Mathematics

2 answers:

ANEK [815]4 years ago

7 0

Answer: neither A or B

Step-by-step explanation:

both have repeated inputs and outputs

IgorC [24]4 years ago

3 0

Answer:

Neither set A nor set B represents a function.

Step-by-step explanation:

According to the definition of a function, for each input there exists a unique output. In other word for each value of x there exists unique value of y.

In set A we have four ordered pair (-4,5),(1,-1),(2,-2) and (2,3).

It means for x=2, we have two values of y, i.e., -2 and 3.

Since for a single value of x there exist more than one value of y, therefore set A is not a function.

In set B we have four ordered pair (2,2),(3,-2),(9,3) and (9,-3).

It means for x=9, we have two values of y, i.e., -3 and 3.

Since for a single value of x there exist more than one value of y, therefore set B is not a function.

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Step-by-step explanation:

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2 years ago

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

A phone company offers two monthly plans. Plan A costs $18 plus an additional $0.11 for each minute of calls. Plan B costs $8 pl

Anastasy [175]

Answer:

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4 years ago

kimi is playing hide-and-seek with Tommy and Manuel. Tommy is hiding 12 feet south of Kimi, and Manuel is hiding due east of Tom

ad-work [718]

Answer:

Tommy and Manuel are 16 ft apart

Step-by-step explanation:

The locations of all three players are shown in the image below

They form a right triangle where the hypotenuse is 20 ft, and one of the legs is 12 ft. We must find the other leg.

We must use Pythagoras's theorem. Being a and b the legs of a right triangle and c its hypotenuse, then

$c^2=a^2+b^2$

Knowing c and one of the legs, say b:

$a^2=c^2-b^2$

Using the values c=20, b=12 we find

$a^2=20^2-12^2=400-144=256$

$a=\sqrt{256}=16$

So, Tommy and Manuel are 16 ft apart

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4 years ago