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
faltersainse [42]
3 years ago
15

Which of the following relations is a function? A.{ (-2, 4), (-1, 3), (5, 2), (1, 4) } B.{ (1, 7), (1, 8), (2, 7), (3, 8) } C.{

(2, 4), (4, 6), (4, 8), (6, 4) } D.{ (5, 7), (6, 3), (8, 6), (5, 4) }
Mathematics
1 answer:
siniylev [52]3 years ago
3 0
From the pairs of x,y, if the set has two "x" of the same value, that is, "x" repeats, or an x-repeat, then is NOT a function

so, the group that doesn't have any x-repeats, is a function, now let's check

\bf A.\{ (-2, 4), (-1, 3), (5, 2), (1, 4) \}\\\\
B.\{ (\boxed{1}, 7), (\boxed{1}, 8), (2, 7), (3, 8) \}\impliedby \textit{has one re}\textit{peat, no dice}\\\\
C.\{ (2, 4), (\boxed{4}, 6), (\boxed{4}, 8), (6, 4) \}\impliedby \textit{also has one re}\textit{peat, no dice}\\\\
D.\{ (\boxed{5}, 7), (6, 3), (8, 6), (\boxed{5}, 4) \}\impliedby \textit{same, has one re}\textit{peat, no dice}
You might be interested in
The circle shown has center o and radius 4. what is the area of the shaded region?
Vlad [161]

The ratio of his savings: expenses = 7: 5

So, total of the ratio is = 7 +5 =12

His savings will be 7/12* allowance

His expenses will be 5/12 * allowance

We know that the allowance that he gets is $3

His savings = 7/12 * allowances  

His savings = 7/12 * 3

His savings = $7/4 or 1 ¾  

Now, we convert the 7/4 (or 1 ¾) into a decimal.  

1 ¾ when converted is decimal is 1.75

His Savings = $1.75


3 0
3 years ago
Jacob is tiling his square walk with square tiles. He is able to fit 5 tiles up and 5 tiles across. If each tile has a length of
frozen [14]

Answer:

The perimeter of the kitchen wall = 60 b

Step-by-step explanation:

The number if tiles used in the length side of the square walk = 5 tiles

The length of 1 tiles  = 3 b

So, the length of 5 tiles = 5 x ( Length of 1 tile)  

= 5 x (3 b)  =  15 b

So, the length of the square walk = 1 5 b

Perimeter of SQUARE  = 4 x SIDES

⇒ Perimeter of the wall  = 4 x (Side)

                                        = 4 x (15 b)  = 60 b

Hence, the perimeter of the kitchen wall = 60 b

8 0
3 years ago
the instructor has save $3500 and rents an apartment for $275 monthly. he believes the point 6, 1850 would be on the equation of
bazaltina [42]

Answer:Yes, he is correct

Step-by-step explanation:Plug 6 in as your x-value in the equation y=-275x+3500 and you will get y=1850

6 0
3 years ago
What is the slope of the line that has the equation 4x + 2y = 12?
WARRIOR [948]

Answer:

The slope is -2

Step-by-step explanation:

convert to slope intercept form. the number or fraction by the x when in slope intercept form is the slope.

6 0
3 years ago
Read 2 more answers
Which of the following is an extraneous solution of (45-3x)^((1)/(2))=x-9
Anna007 [38]

Answer:

c x =3

Step-by-step explanation:

5 0
3 years ago
Other questions:
  • What’s the answer to this
    5·1 answer
  • What is 2 times the difference of 73 and twice the sum of 9 and 4?
    6·1 answer
  • To solve the inequality -4x < 8, you would divide both sides of the inequality by -4. true or false
    15·1 answer
  • So far, Monica has read 5/6 of a book.She has read the same number of pages each day for 5 days What fraction of the book does M
    7·1 answer
  • Estimate 45,580-12,363 to the nearest thousands
    12·1 answer
  • Experts/ace/geniuses helpp
    6·2 answers
  • A minivan can hold up to 7 people how many minivans are needed to hold 45 people
    11·2 answers
  • Rectangle PQRS is rotated 90° clockwise about the origin. On a coordinate plane, rectangle P Q R S has points (negative 3, negat
    6·2 answers
  • 1. Analyze the question below. What is the slope of the line?
    13·2 answers
  • I need help plz I do not really understand this if you can help me I’d highly appreciate
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!