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
SVETLANKA909090 [29]
3 years ago
11

Hey plsss help meeeeee

Mathematics
1 answer:
nalin [4]3 years ago
7 0

Answer:

The first, third, and fourth answer choices represent a function.

Step-by-step explanation:

A relation is a relationship between sets of values. The two quantities that are being related to each other are the input (x-variable) and the output (y-variable). But relations in general aren't always a good way to relate between x and y.

Say that I have situation where I want to give <em>x </em>dollars to the cashier so he can change them to <em>y</em> quarters. Here is a "example" of the relation:

Dollars (x) | Quarters (y)            

----------------------------------              

       0       |          0                      

        1       |          4                      

       2       |          8

       2       |          12

Do you see something wrong here? Yes! We all know that you can't exchange 2 dollars for 12 quarters. You can only exchange 2 dollars for 8 quarters and only 8 quarters. This is a general reason why we don't rely on general relations for real-life situations. One x-variable does not exactly map to one and only one y-variable.

However, a relation that can map one x-variable to one and only one y-variable is known as a function. Let's make the above example an actual function to prove a point:

Dollars (x) | Quarters (y)            

----------------------------------              

       0       |          0                      

        1       |          4                      

       2       |          8

       3       |          12

Now, the 3 dollars make 12 quarters as it should. This is how a function should look like.

There are two ways to check if a relation is a function. On a relation, table, or a set of ordered pairs, you have to make sure there is no "x-variable" that repeats. All x-values of a relation have to be unique in order to be a function. On a graph, you can also perform the Vertical Line Test. If you draw vertical lines over a relation and if the lines cross only once, then it is a function. If not, it fails the Vertical Line Test.

So to answer you're question, the first, third, and fourth choices are functions because they all have unique x-variables. The second choice is not a function because it fails the Vertical Line Test.

You might be interested in
A bus company has contracted with a local high school to carry 450 students on a field trip. The company has 18 large buses whic
Pavel [41]

Answer:

You need to times the first two numbers together and then times the answers with the other number and at the end divide them and this is ur answer, i have a test right now so i cant really do it for you so get a notebook and paper and try to solve it

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Need help with #'s 6 and 7
aleksklad [387]
Now, since I don't want to actually work hard in class, I fail purposely to stay in normal and not advanced. However this is just a algebraic problem with fractions. Add 2/3 to both sides, (I dont know what that gives you) you then have t = whatever. Hope this helpful! :D <span />
8 0
3 years ago
What is the value of x? x/4-5=6
ivann1987 [24]
Let's solve your equation step-by-step.<span><span><span>x<span>(4)</span></span>−5</span>=6</span>Step 1: Simplify both sides of the equation.<span><span><span>x<span>(4)</span></span>−5</span>=6</span><span>Simplify: (Show steps)</span><span><span><span>4x</span>−5</span>=6</span>Step 2: Add 5 to both sides.<span><span><span><span>4x</span>−5</span>+5</span>=<span>6+5</span></span><span><span>4x</span>=11</span>Step 3: Divide both sides by 4.<span><span><span>4x</span>4</span>=<span>114</span></span><span>x=<span>114</span></span>Answer:<span>x=<span>11<span>4</span></span></span>
3 0
3 years ago
Read 2 more answers
I need help and it due tomorrow!!! ill give aomethe brainlest answer​
DochEvi [55]

Answer:

The measure of the indicated angle is 142°

Step-by-step explanation:

The sum of the measures of the interior angles of a polygon is

∑m = (n - 2) × 180°, where

  • n is the number of its side or its angles

In the given figure

∵ The polygon has 6 angles

∴ n = 6

→ Use the rule above to find the sum of the measures of its interior ∠s

∵ ∑m = (6 -2) × 180°

∴ ∑m = 4 × 180°

∴ ∑m = 720°

∵ The measures of its interior ∠s are (2x - 50)°, (x + 40), 80°, (x + 20)°,

   x°, 150°

→ Add them to find their sum

∴ ∑m = 2x - 50 + x + 40 + 80 + x + 20 + x + 150

→ Add the like terms in the right side

∴ ∑m = (2x + x + x + x) + (-50 + 40 + 80 + 20 + 150)

∴ ∑m = 5x + 240

→ Equate the right sides of ∑m

∵ 5x + 240 = 720

→ Subtract 240 from both sides

∴ 5x + 240 - 240 = 720 - 240

∴ 5x = 480

→ Divide both sides by 5

∴ x = 96

→ To find the indicated angle substitute x in its measure by 96

∵ The measure of the indicated angle = 2(96) - 50

∴ The measure of the indicated angle = 192 - 50

∴ The measure of the indicated angle = 142°

5 0
3 years ago
How do you convert 94 degrees Fahrenheit to Celsius?
IrinaK [193]
C = 5/9(F - 32) = 5/9(94 - 32) = 5/9(62) = 34 4/9 C
7 0
3 years ago
Other questions:
  • There were 230{,}600230,600230, comma, 600 jobs available in the field of radiology in the year 201420142014. Each year, that nu
    9·2 answers
  • The scale of a model train is 4 inches to 30 feet. One of the cars of the model train is 6 inches long. What is the length, in f
    12·1 answer
  • Timothy has a fenced-in garden in the shape of a
    12·1 answer
  • The measure of an angle is fourteen times the measure of its complementary angle. What is the measure of each angle?
    9·2 answers
  • A parallelogram has a length of 15cm and a height of 7.5cm. Calculate it’s area.
    12·2 answers
  • I’m sure that’s the answer but i’m not confident so please help
    6·1 answer
  • Select the quadrant or axis on which you would find the point (-3,-5).
    13·1 answer
  • State if each triangle is acute, obtuse, or right. 50, 48, 14​
    15·1 answer
  • Find two numbers the quotient is between. then estimate the quotient 41÷3
    7·1 answer
  • 8. A grocer buys x kg of potatoes at Birr 1.50 per kg and y kg of onions al
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!