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
BlackZzzverrR [31]
3 years ago
14

PLS HELP I DONT UNDERSTAND :( WILL MARK BRAINLIEST+

Mathematics
2 answers:
mojhsa [17]3 years ago
4 0

Answer:

C

Step-by-step explanation:

functions can only have domains that are different numbers, (first number) the rest repeat the domain and that makes it not a function

galben [10]3 years ago
3 0

Answer:

C

Step-by-step explanation:

A set of pairs is a function if and only if there is only <em>one</em> y-value for each x-coordinate. In other words, the x-coordinate <em>cannot </em>repeat. If it does, then it must equal the same thing.

Let's go through each of the choices.

For A, -5 repeats twice. It simultaneously equals both 4 and -2. This cannot be true if this is a function, so A is not correct.

For B, 2 repeats twice. It equals both 6 and -6. So, this is also not a function.

For C, no digits are repeating. Thus, this is a function.

To make sure, in D ,-3 is repeating. It is both -4 and 8, so this is not a function.

So, our answer is C.

And we're done!

You might be interested in
Find the number such that the sum of that number and 25 is 48
PilotLPTM [1.2K]

Answer:

x = 23

Step-by-step explanation:

x + 25 = 48

x = 23....

3 0
3 years ago
Read 2 more answers
Parabola passes through the points (0,5), (1,4), and (2,5). What function does the graph represent?
AfilCa [17]

Answer:

x^2 - 2x + 5 = 0.

Step-by-step explanation:

The (0, 5) is the point where the parabola passes through the y axis (where x = 0), so we can write the equation as

y = ax^2 + bx + 5   where a and b are constants to be found.

Also, since (1, 4) and (2, 5) are points on the curve, substituting, we have the system:

a(1)^2 + 1b + 5 = 4

a(2)^2 + 2b + 5 = 5

Simplify these 2 equations:

a  + b  =  -1  .................(1)

4a + 2b = 0..................(2)

Multiply the first equation by -2:

-2a - 2b = 2 .................(3)

Add (2) + (3):

2a = 2

a = 1.

Substitute a = 1 into (2):-

4*1 + 2b = 0

2b = -4

b = -2.

7 0
3 years ago
–20 ÷ 5 = <br><br> I need help
Rashid [163]
The answer is -4
-20 divided by 5 ^
7 0
3 years ago
4y = 5x is this a direct variation?
Alenkasestr [34]

Answer:

5/4

Step-by-step explanation:

4y = 5x Divide by 4

y = (5/4) x

To make y = kx from y = (5/4) x

k must be (5/4)

k = 5/4

3 0
2 years ago
Give the rate in miles per hour. Round to the nearest tenth.<br> Caroline walks 9 inches per second.
True [87]
Answer: 360 miles per hour…………………
8 0
3 years ago
Other questions:
  • Write a two proof column<br> Given: 4y=2x-10 ; y=6<br> Prove: x=17
    5·1 answer
  • Im struggling on dis now TwT pls halp me<br><br>lateral area<br>surface area <br>volume​
    10·2 answers
  • Which table of ordered pairs represents a proportional relationship?
    11·2 answers
  • Help asap need help for me
    15·1 answer
  • If 1 foot= 0.37 metres and 1 miles = 5180 feet, find the number of kilometres in 15 miles​
    5·1 answer
  • I don’t understand how I get this answer
    6·2 answers
  • Find the slope and y-intercept<br> and write the equation.<br> (-98, 22), (0, -48)<br> m =<br> b=
    9·1 answer
  • PLEASE HELP!!!!!!!!!!! ASAP!!!!!!!!!!!
    6·1 answer
  • Marta has a bracelet made up of 3 red, 5 yellow, and 24 green beads.What is the ratio of yellow beads to beads that are not yell
    8·1 answer
  • I'm unsure on how to figure out what "X" is..?<br><br> X/2 = 6/3
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!