What is the slope of a line which passes through points (-7,2) and (21,-10)?
Answers
The question gives us two points, (-7,2) and (21,-10), from which we can find the slope and later the equation of the line.
Finding the Slope
The slope of the line (m) = (y₂ - y₁) ÷ (x₂ - x₁)
= (2 - (- 10)) ÷ (-7 - 21)
= - ¹²/₂₈
= - ³/₇
Checking my answer:
We can use the slope we found and a point to write the equation of a line. If the line passes through both points, then we calculated the slope correctly.
We can now use the point-slope form (y - y₁) = m(x - x₁)) to write the equation for this line:
⇒ y + 10 = - ³/₇ (x - 21)
To test my answer, I have included a Desmos Graph that I graphed using the information provided in the question and my answer.
Related Questions
What does the slope represent in this graph ?
Answers
Brainliest?
Look at any numbered point on x or y axis and it corresponding x or y. For example, 10 units sold = $40. 1 unit = $4.
Could someone please help me answer this, please no spam, will give brainliest, thank you! (homework help)
Answers
Answer:
b<-1
Step-by-step explanation:
-3b-2>1
add 2 on both sides
-3b>3
divide both sides by -3
b<-1
Pls help me fast!!!!!!!!!!!!
Answers
x=0 I think not 100% sure though
Answer: The equation has infinitely many solutions.
Step-by-step explanation:
With George's end result of 3=3, you can assume that the equation is set up in such a way that no matter what you plug in, you will get the same number on both sides of the equals sign, which means the solution is valid. Therefore this means that there are an infinite number of solutions.
edin has £300 in his saving account.
his bank offers him a fixed 5% simple interest rate per annum, for a period of 3 years.
how much interest will he have earned after 3 years?
Answers
Answer:
$45
Step-by-step explanation:
300/100 = $3 = 1%
$3 x 5 = $15 = 5%
$15 x 3 years = $45
I'm trying to get to an 100 please do not get me wrong..
Answers
Answer:
Its a parallelogram.
Step-by-step explanation: Hope it helps. :)
Jenny & Natasha are working on a problem together: Solve x/3 + 8 = −2. Natasha thinks the first step is to multiply by 3. Jenny explains that this is not the most efficient way to solve. Explain who is correct & justify your reasoning.
Answers
The individual that is correct is Natasha. This is because the answer can be gotten using Natasha's method
The given equation is [tex]\frac{x}{3} + 8 = -2[/tex]
Solving the equation using Natasha's method
the fist step is to multiply by 2
x + 24 = - 6
The second step is to combine and add similar terms
x = -24 - 6
x = -30
Second method of solving the equation
The equation the friends are trying to solve is [tex]\frac{x}{3} + 8 = -2[/tex]
The first step is to combine similar terms
[tex]\frac{x}{3}[/tex] = - 8 - 2
The second step is to add similar terms together
[tex]\frac{x}{3}[/tex] = - 10
The third step is to multiply both sides of the equation by 3
x = (-10 x 3)
x = -30
A similar question was answered here: https://brainly.com/question/18613652?referrer=searchResults
At Rose's Beading Boutique, 14 out of the 56 beads on clearance are plastic. What percentage of beads on clearance are plastic?
Write your answer using a percent sign (%).
Answers
Solvetheequation: (x-2)/(5x-3)=-1/4
please solve it fast its urgent
Answers
Answer:
x = 11/9
Step-by-step explanation:
b + 2 = -18 find what the letter b means
Answers
Answer:
b = -20
Step-by-step explanation:
b + 2 = -18
b = -20
Answer:
b= -20
Step-by-step explanation:
the first step is to subtract 2 from both sides of the equation.
b + 2 = -18
-2 -2
-------------------
the -2 and +2 cancel
b = -20
hope this helps! :D
K is the midpoint of JL Jk=9x-5 and KL=7x+3 Find JL
Answers
The equations given are equal so put them together and solve for x. Plug that back in to get 31. Then multiply that by two to account for the two segments. That leaves you with 62 units.
The Mad Hatter is ordering cups from Teacups
Limited, for his tea party. The Tescups, Limited catalog
prices cups according to the number of cups ardered. For
orders of 20 or fewer cups, the price is $1.40 per cup plus
$12 shipping and handling on the order. For orders of
more than 20 cups, the price is $1.10 per cup plus $15
shipping and handling
a) Create a piece wise function to describe the
price of cups
b) How much will it cost the Mad Hatter if he orders
20 cups?
Answers
a) The piecewise function is:
[tex]C(n) = 12 + 1.40n, n \leq 20[/tex]
[tex]C(n) = 15 + 1.1n, n > 20[/tex]
b) Applying the piecewise function, it is found that it will cost $40.
A piecewise function is a function that has different definitions based on the input.
Item a:
20 or fewer cups, fixed cost of $12 for shipping plus $1.40 per cup. Thus, the first definition of the function for the cost of n cups is:[tex]C(n) = 12 + 1.40n, n \leq 20[/tex]
For more than 20 cups, price of $1.1 per cup plus a shipping and handling fee of $15. Then:[tex]C(n) = 15 + 1.1n, n > 20[/tex]
Then, the piece-wise function is:
[tex]C(n) = 12 + 1.40n, n \leq 20[/tex]
[tex]C(n) = 15 + 1.1n, n > 20[/tex]
Item b:
The cost of 20 cups is C(20).It is the first definition, which is valid for [tex]n \leq 20[/tex].Then:
[tex]C(20) = 12 + 1.4(20) = 12 + 28 = 40[/tex]
It will cost $40.
A similar problem is given at https://brainly.com/question/24815096
Please help pls ……….
Answers
Answer:
see explanation
Step-by-step explanation:
The parts of the graph where it is going 'up' are where it is increasing.
This is between x = - 4 to x = 0 and between x = 5 to infinity
Expressing in interval form the graph is increasing for
(- 4, 0 ) and (5, ∞ )
Finding the nth term, please help.
Answers
Answer:70
Step-by-step explanation: notice the pattern is adding by 8 after the first term
2/3÷(-14) show your work.
Answers
2/3 * -1/14 = -2/42 = -1/21
Graph the inequality on the number line
B>-9 graph
Answers
Answer:
-9=9
Step-by-step explanation:
that the answer I think
At the garage sale, each book is priced the same. You purchased 3 fiction books, 5 picture books, 2 non fiction books.and 4 puzzel books. write an expression in simplest form that represents the total amount of money the order will cost
Answers
explanation:
since every book is priced the same, you can add them together to get 14. x = the cost of one book, but since we don’t know the cost of one book, we use the variable x. so, 14x is equal to the total cost of the order. hope this helped!
Look at picture
A+b+cx4
Answers
Answer:
15?
Step-by-step explanation:
is a=1 b=2 c=3?? I'm confused
The highest temperature ever recorded in a particular city was 105°F, and the lowest was
- 27°F. Use absolute values to find the difference between the highest and the lowest
temperatures.
Answers
highest is 105F
the lowest is-27F
Can you help me please
Answers
Answer:
a. 8, 14, 20
x=5 when y=11
Step-by-step explanation:
Just subsititute the x in the equation with the number that represents x.
the area of a rectangle is 40ft^2. the length is two less than twice the width. find the length and the width in feet for the rectangle
Answers
Answer:
length is 8ft and width is 5ft
Step-by-step explanation:
I got this answer because it said the length is 2 less than twice the width and I thought of 5 and 5×2 is 10 - 2 which is 8
Which table represents a function?
Answers
Answer:
only the one to the most left is a function
Step-by-step explanation:
if the x value repeats it is not a functon
(sec^2 - 1) (cse^2 -1) Show work please
Answers
what do you want us to do because we can
-solve for S
-solve for E
-solve for C
-multiply them together
-find the intercepts of any
-turn any into others
-more
PLEASE I NEED HELP!!!?!?
Answers
Answer:
A, E, and D
Step-by-step explanation:
Help please also give an explanation
Quinn and Logan solved the equation 8(x-5)=8x+40. Quinn said the answer is x=0, Logan said the answer has infinitely many solutions. Who is right? Explain your answer.
Answers
Answer:
Neither of them are right
Step-by-step explanation:
First, let's actually solve this equation:
8 ( x - 5 ) = 8x + 40
Distribute on the left:
8 ( x - 5 )
( 8 x X ) + ( 8 x ( -5 ) )
8x - 40
8x - 40 = 8x + 40
Add 40 to each side:
8x = 8x + 80
Subtract 8x from both sides:
0 = 80
0 ≠ 80
There are no solutions to the equation
Answer:
joe
joe mama
++
Step-by-step explanation:
A fair dice is rolled. Find the probability of showing an even prime number
please help me it's math I really need the answer!
Answers
Answer:
1/36
Step-by-step explanation:
outcomes/total number of outcomes
1/36
I think this is it but I'm not sure, don't take my word for it if you don't think it's correct either.
Ivory created a scaled copy of triangle C using a scale factor of 4.What is the height of Ivory's copy?The area of the triangle they gave me is 4.5 units
Answers
Height of the Ivory's copy = 12 units
Hope this helps
The average of three numbers is 30 two of the numbers is the is 28 and 35 what's is the third number
Answers
Answer:
27
Step-by-step explanation:
3 numbers=30x3=90
third number=90-28-35=27
Hope this helps! Thanks.
I WILL MARK YOU BRAINLIEST!
A square pizza has an area of 64 square inches. What is the length of stuffed crust you will need to put around the pizza
Answers
Square means the sides equal each other. Sqrt(64) = 8.
The sides of the square pizza are all 8 inches. Finding the perimeter, we add all the sides which is 4 * 8. The crust should be 32 inches.
Bon appetit!
What are the correct answers to this geometry problem?
Answers
Answer:
3. HI
4. GI JH JG
-If you thought that I was helpful, go ahead and give me the brainliest answer!
Black Tuesday refers to the day:
Herbert Hoover was elected president.
World War I started.
the U.S. stock market had one of its worst days ever.
All of these choices are correct.
Answers
Answer:
all are correct
Step-by-step explanation: