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
anastassius [24]
3 years ago
10

PLEASE HELP THANK YOU!!!

Mathematics
1 answer:
Paul [167]3 years ago
7 0

Answer:

Only C is a function

Step-by-step explanation:

To test whether a graph is a function you use the vertical line test.

If you can place a vertical line anywhere on the plane (in the domain of the "function" to be tested) and it intersects the curve at more than one point, the curve is not a function.

We see with A, wherever we put the vertical line it intersects twice.

With B, it intersects infinitely many times.

C is a function because wherever we put the vertical line, it only intersects once.

D is a function because it intersects twice providing we do not put it on the "tip" of the parabola.

The mathematical reasoning behind this is that a function must be well-defined, that is it must send every x-value to one specific y-value. There can be no confusion about where the function's input is going. If you look at graph B and I ask you what is f(3)? Is it 1? 2? 3? ... Who knows, it's not well-defined and so it's not a function. However if I ask you about C, whichever input value for x I give you, you can tell me to which y-value it gets mapped/sent to.

You might be interested in
Can you draw trapezoid three right angles
Hunter-Best [27]
Its impossible to draw a trapezoid with just three right angles.

a trapezoid has 4 sides, which means all the angles inside the trapezoid must add up to 360 degrees.

if you have just 3 right angles (90x3), you already use up 270 degrees. Leaving you with just 90 degrees left, which is also a right angle. That means, there has to be four, if you have at least 3.

6 0
3 years ago
Zen deposited some money in a savings account. The graph below shows the value of Zen's investment y, in dollars, after x months
kifflom [539]

The y-intercept of 1000 in the graph is at the point where x is equal to 0.

At x=0, it means no month have passed. It is the initial point where Zen deposited the money.

What is the amount (y axis)? 1000!

So y represents the initial deposit of Zen, which is 1000.


ANSWER: Answer choice D (Amount of money Zen deposited in the savings account)

6 0
3 years ago
Read 2 more answers
Inez has 699 pennies and 198 nickels estimate how many more pennies than nickels she has.
Over [174]
She has 501 more pennies than nickles.
8 0
3 years ago
Read 2 more answers
Translate: twice the sum of a number and 9 equals 7 into an equation
Ghella [55]
equals\ 7\to=7\\sum\ of\ a\ number\ and\ 9\to n+9\ (n-the\ number)\\twice\ the\ sum\ ...\to2(n+9)\\\\Answer:\boxed{2(n+9)=7}\\\\solution:\\\\2(n+9)=7\ \ \ \ |divide\ both\ sides\ by\ 2\\n+9=3.5\ \ \ \ |subtract\ 9\ from\ both\ sides\\\boxed{n=-5.5}
4 0
3 years ago
The table below shows an inequality and a number by which to multiply both sides. Inequality Multiply each side by Negative 2 le
Nadya [2.5K]

Answer:

the answer is basicly D

also here is a cool keyboard emoji

t(*-*t) lol

5 0
3 years ago
Other questions:
  • A sea lion dove from the water's surface at sea level to an altitude of −216.12 meters in 2.4 minutes. What is the average chang
    9·1 answer
  • Trisha drew the figure below what figure did she draw
    12·1 answer
  • Use two unit multipliers to convert 1500 centimeters to feet.<br>thanks :)
    14·2 answers
  • Help! Question and choices in the picture.​
    13·1 answer
  • 4. Lynn can walk two miles intenta
    6·1 answer
  • 3. There were 155 people at the basketball game. Tickets for the
    7·1 answer
  • Need help lol
    6·1 answer
  • Solve for x in the diagram below.
    12·1 answer
  • A rental car company has noticed that the distribution of the number of miles customers put on rental cars per day is skewed to
    15·1 answer
  • Divide and find quotient<br>(a⁴-b⁴) ÷ (a+b)<br>(step by step explanation)​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!