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
Lelu [443]
3 years ago
12

Writing equations of lines

Mathematics
1 answer:
Valentin [98]3 years ago
7 0

Step-by-step explanation:

Equation of straight line is y=mx+c

choose any two points on straight line

for me I choose:(-3,11) and (3,-1)

use these two points to find gradient,m.

m= (-1-11)/(3-(-3))

m= -2

now, y=-2x+c

choose any point on the straight line

I choose point (3,-1)

sub the point into the equation to find c

-1=-2(3)+c

c=5

equation: y=-2x+5

You might be interested in
At a school, 40% of the sixth-grade students said that hip-hop is their favorite kind of music. If 100 sixth-grade students pref
Sveta_85 [38]
If 100 students make up 40% of the 6th grade population, then 50 students make up 20% of the 6th grade population. 20% × 5 makes 100% so if your multiply 50 by 5 you'd get your population.
50 × 5 = 250 sixth-graders
7 0
3 years ago
Read 2 more answers
After a 15% increase, a town has 115 people. What was the population before the increase?
Arte-miy333 [17]

Answer:

100 people

Step-by-step explanation:

<em>Population</em><em> </em><em>Of</em><em> </em><em>People</em><em>=</em><em>1</em><em>1</em><em>5</em><em>Percentage</em><em>ncrease</em><em>=</em><em>1</em><em>5</em><em>%</em>

<em>The</em><em> </em><em>New</em><em> </em><em>Population </em><em>corresponds </em><em>to</em><em> </em><em>1</em><em>1</em><em>5</em><em>%</em>

<em>(</em><em>That</em><em> </em><em>is</em><em> </em><em>1</em><em>0</em><em>0</em><em>+</em><em>1</em><em>5</em><em>)</em>

<em>We</em><em> </em><em>want</em><em> </em><em>to </em><em>find</em><em> </em><em>the</em><em> </em><em>popula</em><em>tion</em><em> </em><em>that</em><em> </em><em>corresponds</em><em> </em><em>to </em><em>100%</em><em> </em><em>that </em><em>is </em><em>the</em><em> </em><em>original</em><em> </em><em>population</em><em>.</em>

<em>Therefore</em><em> </em><em>Original </em><em>Population</em><em>;</em>

<em>\frac{100}{115}\times {115}{}</em>

<em>100 \: people</em>

7 0
3 years ago
What is part of a line, has one endpoint, and continues in one direction
Damm [24]
It is called a ray. Which is what you described
4 0
3 years ago
What is the solution
lozanna [386]

Answer:

1+1=a a=solution

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
How much interest will be paid in 1 year for a loan of $3600 at 8 1/2% simple interest?
solong [7]
The answer to your question is 260,100
7 0
3 years ago
Other questions:
  • I need help it's so important if u answer them correctly u will be named the branliest
    10·1 answer
  • If Tim Cook, CEO of Apple wants to make a list of the employees who are above 40, what process he will use? Option: 1.Data query
    7·1 answer
  • For each ordered pair determine whether it is a solution to 4x-7y=19
    6·1 answer
  • X + 15y = 45 / x + 10y = 30 solve for x and y
    15·2 answers
  • The first five terms of a sequence are:
    13·2 answers
  • Pleaseeee hELPppP correct answer
    7·1 answer
  • A shop produces 39 wetsuits every 2 weeks. how long will it take the shop to produce 429 wetsuits
    14·2 answers
  • Huilan is 11 years older than Thomas. The sum of their ages is 65. What is Thomas's age?
    10·1 answer
  • What is meant by a stratified sample?
    13·2 answers
  • Anyone know how to do this?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!