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inn [45]
3 years ago
11

Which of the following sets of ordered pairs represents a function?

Mathematics
2 answers:
Artemon [7]3 years ago
8 0

Answer:

B

{(8,-9), (-8,-5), (8-7), (-8,-6)}

Step-by-step explanation:

A function can have two X values but not two Y values

Lubov Fominskaja [6]3 years ago
4 0

Answer:

<h2>D.</h2><h2>{(-9,8), (-5,-8), (-7,8), (-6,-8)}</h2>

Step-by-step explanation:

A function is defined as the relation between two sets with an specific characteristic:

  • If each x-value has only one y-value assigned, then the expression it's a function.
  • If each x-value has more than one y-value image, then the expression it's not a function, it's just a relation.

So, in this problem, we have to look for this characteristic. Option A has two points with the same x-value and different y-value assigned, so it's not a function. Option B has two y-values assigned for x=8, so it's not a function either. Option C is not a function because x=13 has to different images y=-3 and y=0.

At last, option D represent a function, because each x-value has only one image: {(-9,8), (-5,-8), (-7,8), (-6,-8)}

It's important to notice that, one y-value can have different x-values assigned, that's a function, but it cannot happen in the opposite way, one x-value with more than one y-value assigned.

Therefore, the right answer is D.

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The number of ways 8 cars can be lined up at a toll booth would be computed from
stepladder [879]

Answer: c. 8!

Step-by-step explanation:

We know , that if we line up n things , then the total number of ways to arrange n things in a line is given by :-

n! ( in words :- n factorial)

Therefore , the number of ways 8 cars can be lined up at a toll booth would be 8! .

Hence, the correct answer is c. 8! .

Alternatively , we also use multiplicative principle,

If we line up 8 cars , first we fix one car , then the number of choices for the next place will be 7 , after that we fix second car ,then the number of choices for the next place will be 6 , and so on..

So , the total number of ways to line up 8 cars = 8 x 7 x 6 x 5 x 4 x 3 x 2 x1 = 8!

Hence, the correct answer is c. 8! .

5 0
3 years ago
The graph shows the location of P in point hour. Point are is on the Y axis and has the same Y coordinate of point PPoint Q is
sergejj [24]

Answer:

I cant understand read ur lesson and ask help from ur teacher

#CarryOnLearning

6 0
2 years ago
3/4 / 3/5 divided. write your answer in simplest form or as a mixed number in simplest
Gnoma [55]

Answer: 5/4

Step-by-step explanation:

do the keep change flip method

then it will be 3/4*5/3 which then equals 15/12 after that you would divide by 3 cause it is the only number that would go in evenly then the answer will be 5/4 in the simplest form

6 0
2 years ago
If m∠TRK equal 32.5°, what is m∠TSK?
MrRa [10]
The answer is whatever is equal to 32.5 hope this helped you
7 0
3 years ago
Can you pls solve this???
Molodets [167]
Since the exterior angle of a triangle is equal to the sum of the interior opposite angles, angle 5 = 90 + angle 1.

Given that angle 5 = 147, 147 = 90 + x.
x = 57 degrees.

So, angle 1 is 57 degrees.
5 0
3 years ago
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