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
dalvyx [7]
3 years ago
15

I need help with algebra

Mathematics
1 answer:
aalyn [17]3 years ago
7 0
To find the equation of a line using two coordinate points, use the slope intercept formula, (y2-y1)/(x2-x1). Using this formula, plug in your values from the two coordinates (-5, -5) and (1, -3). This would look like this:
(-3-(-5))/(1-(-5))
When simplified, you should get 2/6 or 1/3 as your slope or m value. Now that you have your slope, now use your slope intercept equation y=mx+b and plug in your known values. Since you know the m value is 1/3 and you can use one of your set of points to plug into the x and y values, you can plug in these values and solve for b (the coordinate you use doesn't matter but I'm just using the (1,-3)). This would look like this:
-3=1/3(1)+b

When you simplify, you should get -3=1/3+b and when you subtract both sides by 1/3, you should get b=-10/3.

Now that you have your m and b values, you can conclude that your equation for the line would be y=1/3x-10/3



You might be interested in
Xin answered 182 questions correctly on her multiple choice math final that had a
miv72 [106K]

Answer:

91%

Step-by-step explanation:

182/200 = .91

.91 = 91%

Hope that helps!

7 0
3 years ago
N² + 14 = 12n<br>how do I solve by quadratic formula ​
inysia [295]

Answer:

n = 6 + \sqrt{22}  or  n = 6 - \sqrt{22}

Step-by-step explanation:

We can solve this equation using the quadratic formula OR Completing the Square method.

n² + 14 = 12n

rearrange :  n² - 12n + 14  = 0  

here  a= 1 , b = -12,  c = 14

the quadratic formula says:   x =  - b/ (2a)  +  root(b^2 - 4ac) / (2a)

or  x =  - b/ (2a)  -  root(b^2 - 4ac) / (2a)

x =  - (-12)/ (2)  +  root((-12)^2 - 4*14) / (2)

x = 6  +  root (144 - 56) / 2

x = 6 + root(88)/2

x = 6 + root(4*22) / 2

x = 6 + 2*root(22)/2

x = 6 + root(22)  = 6 + \sqrt{22}

so   x =6 + \sqrt{22}   or  x = 6 - \sqrt{22}

In this case  x = n

n = 6 + \sqrt{22}  or  n = 6 - \sqrt{22}

3 0
3 years ago
Read 2 more answers
Calculate the slope of the line going through A(-4,3) and B(0,6)
Whitepunk [10]

Answer:

3/4

Step-by-step explanation:

The slope of the line is given by

m= (y2-y1)/(x2-x1)

   = (6-3)/(0 - -4)

  = (6-3)/( 0+4)

   3/4

5 0
3 years ago
7. The dimensions of a lawn shaped like a trapezoid are given in meters.
Veronika [31]

Answer:D:102

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Can you help please?
harkovskaia [24]

Step-by-step explanation:

Mechanical advantage can be defined using distances:

Mechanical advantage = input distance / output distance

Or it can be defined using forces:

Mechanical advantage = output force / input force

Solving for the output force:

Output force = mechanical advantage × input force

Plugging in values:

Output force = 2.2 × 202 N

Output force = 444.4 N

3 0
2 years ago
Other questions:
  • the length of shadow of a house having 30m height is 30 root 3m find the length of shadow of the house having the height of 40 r
    12·1 answer
  • What is 2+3m=17 <br> 1:7<br> 2:6<br> 3:10<br> 4:5
    14·1 answer
  • Which is a y- intercept of the graphed function?
    15·2 answers
  • The sum of 3 times a number and 4 is between -8 and 10. Define a variable, write an inequality, and solve the problem.
    9·1 answer
  • I need someone to check these answers ASAP.
    6·1 answer
  • Ehhh... idk okay?? Help me
    7·1 answer
  • Find the slope of the line containing the given pair of points. If the slope is undefined state this. (-5,9) and (2,3) can someo
    14·2 answers
  • Ava has $9 to spent on cards. She finds friends with the same amount of money to split the cost of a set. One set costs $27. Eac
    11·1 answer
  • Destiny just received two separate gifts from her great-great-grandmother.
    9·1 answer
  • Samuel takes 5 hours to make a table and a chair. He takes 9 hours to make 3 chairs
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!