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
garri49 [273]
3 years ago
7

What is the equation of the line that passes through 1,4 and 2,1

Mathematics
1 answer:
sashaice [31]3 years ago
3 0

Answer:

y = -3x + 7

Step-by-step explanation:

The equation of a line

y = mx + c

y - intercept point y

m - slope of the line

x - intercept point x

c - intercept point of the line

Step 1: find the slope

m = y2 - y1 / x2 - x1

Given two points

( 1 , 4) ( 2 , 1)

x1 = 1

y1 = 4

x2 = 2

y2 = 1

insert the values

m = 1 - 4 / 2 - 1

m = -3/1

m = -3

y = -3x + c

Step 2: substitute any of the two points given into the equation of a line

y = -3x + c

( 1 ,4)

x = 1

y = 4

4 = -3(1) + c

4 = -3 + c

4 + 3 = c

c = 7

Step 3: sub c into the equation

y = -3x + 7

The equation of the line is

y = -3x + 7

You might be interested in
If Jane is not maximizing her utility with the original purchase combination, remembering the Law of Diminishing Marginal Utilit
gayaneshka [121]

Answer:

Using the Law of Diminishing Marginal Utility, Jane would not be better off buying one more fry, since the marginal utility she obtains from the fries are lower when compared to the chicken sandwich; therefore, she would be better off ordering another chicken sandwich

4 0
3 years ago
 A chemical solution contains 8% of a compound. If there is 16ml of that compound, what is the volume of the solution?
Amanda [17]
U should either multiply 8% by 16ml  hope i helped. :)

8 0
3 years ago
The length of a picture frame is (8u - 12) inches. It’s width is 3/4 of its length. Express the width of the picture frame in te
dezoksy [38]
3/4(8u-12)..................
7 0
3 years ago
-6 - 8 is equivalent to?<br> 6 + (-8)<br> -6 + 8<br> 6 + 8<br> -6 + (-8)
nadezda [96]
It is equivalent to:
-6 + (-8)
7 0
3 years ago
Read 2 more answers
ASAP PLZ
Nimfa-mama [501]

As per the problem

The chemicals in my swimming pool use a ratio of 5 tablets of chlorine for every 14 days.

we have been asked to find

Which ratio shows the number of chlorine tablets needed for 42 days?

Since for each 14 days the number of tablets required is 5

So if you multiply the number of days by some number then, we will have to multiply the number of tablets required by the same number.

So When number of days=14*3=42\\

Then the number of tablets required for 42 days is =5*3=15\\

6 0
3 years ago
Read 2 more answers
Other questions:
  • Four sisters bought a present for their father. They recieved a 10% discount on the original price of the gift. After the discou
    8·1 answer
  • Completing the Square: results in 2 solutions<br> x^2 + 3x = -2
    8·1 answer
  • Please help for answer 56/125-177/625=
    7·1 answer
  • The answer to – 7x + y = -10
    13·2 answers
  • Help me guys........m
    13·2 answers
  • Which algebraic expression represents the phrase "the quotient of negative eight and the sum of a number and three"?
    12·2 answers
  • Can someone help me?<br> 150/-5 x -4
    9·2 answers
  • What is the general form of the equation for the given circle centered at [0, 0)?
    12·1 answer
  • Don has an album that holds 700 photos . Each page of the album holds 7. If 33% of the album is empty, how many pages are filled
    15·1 answer
  • What is the quotient? <br> X+5/3x^2 + 4x+5
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!