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
Alecsey [184]
2 years ago
6

Across which axis was point A reflected​

Mathematics
1 answer:
Snezhnost [94]2 years ago
4 0

Answer:

When point A with coordinates (0, -1) is reflected across the x-axis and mapped onto point A', the coordinates of A' will be (0, 1).

i.e A'(0, 1) is the image of point A after a reflection.

Hence, point A is reflected across the x-axis.

Step-by-step explanation:

When we reflect a point A across the x-axis, the value of 'y' gets negated, but the value of 'x' remains unchanged.

In other words, when point P with coordinates (x, y) is reflected across the x-axis and mapped onto point P', the coordinates of P' will be (x, -y).

Thus, the rule is:

P(x, y) → P'(x, -y)

Thus, when point A with coordinates (0, -1) is reflected across the x-axis and mapped onto point A', the coordinates of A' will be (0, 1).

i.e A'(0, 1) is the image of point A after a reflection.

Hence, point A is reflected across the x-axis.

You might be interested in
I POSTED THIS QUESTION THREE TIMES IF YOU ANSWER THIS (CORRECTLY) GO ANSWER MY OTHER QUESTIONS JUST TO GET THE POINTS YOU DONT H
Charra [1.4K]

Answer:

12/3=4

Y= Time and X=The number of shoelaces

6 0
3 years ago
Read 2 more answers
Im need help on this question
dimulka [17.4K]
You were right, its the second choice CA=CB+BA
4 0
2 years ago
What can you say about the end behavior of the function f(x)=-4^6+6x^2-52 ????
frosja888 [35]
Letter C is correct.
When the function is even, (all powers are even) both ends will go in the same direction.
In this case since the leading coefficient is negative, both ends will go down.
3 0
2 years ago
Tape diagram to subtract 33-19
Tpy6a [65]
Well 33 - 19 = 14 and what do u mean tape diagram?
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:
  • What is the equation linethatis perpendicular to the given line and passes through the point (3,0)?​
    7·1 answer
  • What is the value of x/2y , when x = 10 and y = 1?
    15·2 answers
  • Which expression is equivalent to -6(6 + 8) + 4
    10·2 answers
  • If you apply the changes below to the absolute value parent function, f(x) = [xl,
    14·1 answer
  • Three years ago Laura bought a new car for $27,400. When she traded the car in to a dealer last week it was worth $15,618. Find
    14·1 answer
  • HELP!!! The length of the unknown side is _____. 6.7 7 10.8 1.73
    5·2 answers
  • A triangle is shown with its exterior angles. The interior angles of the triangle are angles 2, 3, 5. The exterior angle at angl
    9·2 answers
  • What happens to the mode of the data set shown below if the number 16 is added to the data set?
    11·2 answers
  • What is the volume of a hemisphere with a radius of 39.4ft, rounded to the nearest tenth of a cubic foot?
    8·2 answers
  • Ms. Keller's recipe uses 5 cups of milk to make 12 smoothies, How many cups of milk will be used to make 18 smoothies?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!