1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
andriy [413]
3 years ago
11

Does this set of ordered pairs represent a function? Why or why not?

Mathematics
1 answer:
Ivan3 years ago
8 0

Answer:

B

Step-by-step explanation:

Your line goes from 6 to -1 by x left and then from -1 to 3. Its impossible as function cannot have more than 1 y value per x value. So lools like its b. Hope this helps) Have a nice day)

You might be interested in
Simplify the expression:<br> 7x2–5x2<br><br> i need the answer quickly
soldier1979 [14.2K]

Answer:

2x^2

Step-by-step explanation:

combine like terms, and do the subtraction!

5 0
2 years ago
Read 2 more answers
45 is what percent of 150
inn [45]

Divide 45 by 150 then multiply by 100:

45 / 150 = 0.3

0.3 x 100 = 30%

The answer is 30%

7 0
3 years ago
Read 2 more answers
Due today helpppppppppp
Rudiy27

Answer:

Step-by-step explanation:

c and d

7 0
3 years ago
Read 2 more answers
What is 90,090,010 in expanded form​
tester [92]

Answer:

90,000,000 + 90,000 + 10


I hope this helped!

Step-by-step explanation:


3 0
3 years ago
At a recent county fair, you observed that at one stand people's weight was forecasted, and were surprised by the accuracy (with
MatroZZZ [7]

Answer:

a)Slope: \hat \beta_1 =\frac{7625.9}{1248.9}=6.106

Intercept: \hat \beta_o = 157.955 -6.106 (69.686)=-267.548

b) r=\frac{7625.9}{\sqrt{[1248.9][94228.8]}}=0.657  

And the determination coeffecient is r^2 = 0.657^2 =0.432  

Step-by-step explanation:

Data given and definitions

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.  

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"    

When we conduct a multiple regression we want to know about the relationship between several independent or predictor variables and a dependent or criterion variable.  

n=110, \sum x_i y_i = \sum (X-\bar X)(Y-\bar Y) =7625.9,\sum x^2_i=\sum (x-\bar x)^2 =1248.9 , sum y^2_i=\sum(y-\bar y)^2 =94228.8  

\sum Y_i =17375 , \sum X_i = 7665.5

Part a

The slope is given by this formula:

\hat \beta_1 =\frac{\sum (x-\bar x) (y-\bar y)}{\sum (x-\bar x )^2}

If we replace we got:

\hat \beta_1 =\frac{7625.9}{1248.9}=6.106

We can find the intercept with the following formula

\hat \beta_o = \bar y -\hat \beta_1 \bar x

We can find the average for x and y like this:

\bar X=7665.5/110 =69.686, \bar y= 17375/110=157.955

And replacing we got:

\hat \beta_o = 157.955 -6.106 (69.686)=-267.548

Part b

In order to calculate the correlation coefficient we can use this formula:  

r=\frac{\sum (x-\bar x)(y-\bar y) }{\sqrt{[\sum (x-\bar x)^2][\sum(y-\bar y)^2]}}  

For our case we have this:  

n=110, \sum x_i y_i = \sum (X-\bar X)(Y-\bar Y) =7625.9,\sum x^2_i=\sum (x-\bar x)^2 =1248.9 , sum y^2_i=\sum(y-\bar y)^2 =94228.8  

So we can find the correlation coefficient replacing like this:

r=\frac{7625.9}{\sqrt{[1248.9][94228.8]}}=0.657  

And the determination coeffecient is r^2 = 0.657^2 =0.432  

6 0
3 years ago
Other questions:
  • Find the first term in the pattern with the formula: 40 • 6n – 1.
    11·2 answers
  • Buddy has 3 $1.00 bills.5 quarters and 4 dimes He sent 3.70 on lunch how much money does he have left​
    7·1 answer
  • What is the greatest common factor of 5x^6+35x^4+15x^3
    9·1 answer
  • V + 19.9==20 find v​
    13·1 answer
  • If g(x)= 3x-1 solve for x when g(x)=-20.
    7·1 answer
  • Dividing and Multiplying functions
    15·1 answer
  • Simplify 8y-7/8x+6y+3/8
    8·1 answer
  • Please help! 15 points!! brainliest if right
    11·1 answer
  • (05.03 LC)A polygon is shown:
    14·1 answer
  • Write the ratio of sin X and cos X <br> Show your work <br><br> (20 points)
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!