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
Semenov [28]
2 years ago
13

What is an equation of the line that passes through the points (1, 2) and (2, -1)?

Mathematics
1 answer:
natita [175]2 years ago
4 0

Answer:

y = -x + 3

Step-by-step explanation:

The equation of a straight line is generally written as;

y = mx + b

where m is the slope and b is the intercept

To get the slope we use the slope formula

Mathematically, that is;

m = (y2-y1)/(x2-x1) = (-1-2)/2-1 = -3/1 = -1

To get the intercept we equate any of the points to the partial equation that we have;

From;

y = -x + b

2 = -1 + b

b = 1 + 2 = 3

So the equation is;

y = -x + 3

You might be interested in
I need a answer asap Please!!
Ganezh [65]

Answer:

The ordered pairs (3 , 6) , (5 , 10) show a proportional relationship ⇒ last answer

Step-by-step explanation:

* Lets explain how to sole the problem

- Proportional relationship describes a simple relation between

 two variables

- In direct proportion if one variable increases, then the other variable

 increases and if one variable decreases, then the other variable

 decreases

- In inverse proportion if one variable increases, then the other variable

 decreases and if one variable decreases, then the other variable

 increases

- The ratio between the two variables is always constant

- Ex: If x and y are in direct proportion, then x = ky, where k

 is constant

 If x and y in inverse proportion, then x = k/y, where k is constant

* Lets solve the problem

# Last table

∵ x = 3 and y = 6

∴ x/y = 3/6 = 1/2

∵ x = 5 and y = 10

∴ x/y = 5/10 = 1/2

∵ 1/2 is constant

∵ x/y = constant

∴ x and y are proportion

* The ordered pairs (3 , 6) , (5 , 10) show a proportional relationship

7 0
2 years ago
What is the vertex of the parabola defined by the equation
avanturin [10]

Answer: B. (2,2)

Step-by-step explanation:

The vertex of the parabola in the form (x-h)^2 = 4p(y-k) is (h, k).

7 0
1 year ago
What are the greatest common factors for each set of numbers(6,14,22)
sertanlavr [38]
Its 15! the GCF is 15
8 0
3 years ago
brandy is playing a game where she wins 50 points per round for 8 rounds. However, during the last round she gets penalized and
Mama L [17]
50*8=400
400+175=575
it subtracted 575 on the last round
4 0
3 years ago
What is the given amount converted to the given units 144 ft; inches​
Tatiana [17]

Final Answer: 1728 inches

Steps/Reasons/Explanation:

Question: What is the given amount converted to the given units 144 ft; inches?

Formula to convert feet to inches: Multiply the length value by 12.

<u>Steps</u>: Multiply 144 by 12

144 × 12 = 1728 inches

~I hope I helped you :)~

3 0
3 years ago
Read 2 more answers
Other questions:
  • HELLLPPPPPPP!!!!!!
    13·2 answers
  • WILL GIVE 5 STARS TO THOSE WHO ANSWER WITH AN EXPLANATION! Greg is purchasing ink cartridges for his computer. Each ink cartridg
    7·2 answers
  • What is contractions words
    12·2 answers
  • (-6)(-7)= _____ what" please ASAP"
    9·2 answers
  • Find the distance of segment RS with endpoints R(4.4) and S(-1,-1)
    11·1 answer
  • Find the measurement of ∠DOC Round your answer to the nearest whole number.
    12·2 answers
  • After that incident, the Civil defense team decided to buy new trucks with ladders higher than 100 feet. They found 2 different
    9·1 answer
  • CAN SOMEONE PLEASE HELP ME PLEASE
    10·1 answer
  • 3 x 10^4 in standard form
    6·1 answer
  • using graphing, what is the approximate solution of this equation? x/(x+3) = sqrt(x - 1) NO LINKS!! ​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!