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
melamori03 [73]
3 years ago
9

Determine whether each equation defines y as function of x, 2x+y=8​

Mathematics
1 answer:
solong [7]3 years ago
6 0

Answer:

Yes. This equation defines y as function of x.

Step-by-step explanation:

Step 1:

Solve the equation for y (this puts the equations in terms of y)

2x+y=8​     becomes

 y = 2x - 8    

This is a linear equation, which is a funtion.  


*Another way to solve this is to look at the graph.  Graphing this equation gives us a line.  Use the vertical line test to see if it's a function.  

To pass the vertical line test (VLT), there can only be one y value to each x value along the graph.  If it passes the VLT, the equation is a function.

If it fails the VRT, the equation is not a function.

You might be interested in
Write an equation that defines the function :)
xenn [34]

Answer:

see below

Step-by-step explanation:

Since the initial value is 5 and it increases by 3 every time x goes up the equation is y = 5 * 3^x.

3 0
3 years ago
5 metric tons = ____ kilograms
ANEK [815]

Answer:

5000

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
Help:(, i’m not sure how to do this
Schach [20]

Answer:

i think you have to multiply the sides..

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
There are 450 students in the 9th and 10th grade taking geometry, and 1/3 of them are 9th graders
algol13
There are 150 9th graders and 300 10th graders
5 0
3 years ago
Read 2 more answers
Select True or False from each pull-down menu, depending on whether the corresponding statement is true or false.
Schach [20]

Answer:

1) FALSE

2) FALSE

3) TRUE

4) TRUE

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Part 1

The mean and standard deviation of a normally distributed random variable which has been standardized are one and zero, respectively.

The mean and the deviation for  the normal standard distribution are:

\mu=0, \sigma =1

So then that's FALSE.

Part 2

Using the standard normal curve, the z−score representing the 10th percentile is 1.28.

We are looking for a value a, that satisfy this:

P(X>a)=0.90   (a)

P(X   (b)  

We can find a z value that satisfy the condition with 0.10 of the area on the left and 0.90 of the area on the right it's z=-1.28. On this case P(Z<-1.28)=0.10 and P(Z>-1.28)=0.90

So that's FALSE.

Part 3

Let z1 be a z−score that is unknown but identifiable by position and area. If the symmetrical area between −z1 and +z1 is 0.9544, the value of z1 is 2.0

If we find this probability:

P(-2.0< Z

So on this case we can approximate to 0.9544. And that's TRUE.

Part 4

Using the standard normal curve, the z−score representing the 75th percentile is 0.67.

We are looking for a value a, that satisfy this:

P(X>a)=0.25   (a)

P(X   (b)  

We can find a z value that satisfy the condition with 0.75 of the area on the left and 0.25 of the area on the right it's z=0.67. On this case P(Z<0.67)=0.75 and P(Z>0.67)=0.25

So that's TRUE.

3 0
3 years ago
Other questions:
  • 32 is 40% of what is the answer
    14·1 answer
  • What do these (&gt;, ≥, &lt;, ≤) mean
    12·2 answers
  • How many terms are in the expression below?<br> 5x +3 - 3x – 1 + 2x + 5
    9·1 answer
  • Write the following equation in slope-intercept form and then graph: 4x + 3y = 12
    8·1 answer
  • URGENT I WILL MARK BRAINLIEST <br>Pick the right answers
    13·1 answer
  • Can someone PLEASE help ASAP !
    8·2 answers
  • On Monday a shop receives $60.30 by selling bottles of water at 45 cents each
    6·2 answers
  • Choose the model for the problem 2/3 divided by 2.<br> 4/6<br> 1/6<br> 1/3<br> 2/3
    7·2 answers
  • A clinical psychologist is administering the Hamilton Rating Scale for Depression (Hamilton, 1967). The scale ranges from 0 to 5
    13·1 answer
  • 100 points PLEASE ANSWER ASAP thank you so much
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!