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What is an equation in slope-intercept form of the line that passes through the points (-2,-2) and (1,7)?
A.
y
C-
B. y = 3.0 +4
=
+
olos
O D. = 3.c – 2
Answers
Answer: y= D.3x-2
Step-by-step explanation:
Explanation:
To find the slope of two points, we need to use the formula m=rise/run or m=y2-y1/x2-x1
-2-7 -9
m = ——— = — = 3
-2-1 -3
Now we have to find “b” as in the equation “y=mx+b”
We already have our “m” which is the slope and that is equal to 3
In order to fine “b,” we have to set it up in point slope form which is the formula
“y-y1 = m(x-x1)”
You can choose to set this up with either one of the coordinates given
In this problem, the coordinates given are
(-2, -2) and (1, 7)
I’m going to use the coordinates (1, 7)
y-y1 = m(x-x1)
y-7 = 3(x-1)
The “7” is the y point
The “3” is the slope
The “1” is the x point
Now we simplify the equation:
y-7 = 3(x-1)
y-7 = 3x-3
+7 +7
—————
y = 3x + 4
Hope this helps and makes sense :)
Related Questions
In a certain state, a survey of 600 workers showed that 35% belonged to a union. Find the 95% confidence interval of true proportion of workers who belong to a union.
Answers
Answer:
The 95% confidence interval of true proportion of workers who belong to a union.
(0.29657 , 0.40343)
Step-by-step explanation:
Explanation:-
Given sample size 'n' = 600
Given sample proportion p = 35% or 0.35
The 95% confidence interval of true proportion of workers who belong to a union.
[tex](p^{-} -Z_{0.05} \sqrt{\frac{pq}{n} } , p^{-} + Z_{0.05} \sqrt{\frac{pq}{n} } )[/tex]
[tex](0.35 -1.96\sqrt{\frac{0.35 X0.65}{600} } , 0.35 + 1.96\sqrt{\frac{0.35 X 0.65}{600} } )[/tex]
( 0.35 - 1.96 (0.02726) , 0.35 + 1.96 (0.02726)
(0.35 - 0.05343 , 0.35 + 0.05343)
(0.29657 , 0.40343)
Final answer:-
The 95% confidence interval of true proportion of workers who belong to a union.
(0.29657 , 0.40343)
Please need help ASAP I would really appreciate if you help me
Answers
Answer:
y = 900(1 - .40)^3
y = 194.4 or rounds to $194
Step-by-step explanation:
The perimeter of a rectangle is 70 and it's diagonal is 25. Find it's length and width.
Answers
d=25
Let’s name length y and width x
x+x+y+y=70
2x+2y=70
Now we need to write phytagoras theorem for the second equation. x^2+y^2=25^2
x^2+y^2=625
{2x+2y=70
{x^2+y^2=625
{x=35-y
{(35-y)^2+y^2=625
Now just solve it for y yourself❤️hope this helped
How many fewer 14 starfish are there than 16 jellyfish and 4 sharks
Answers
Answer:
6 fewer starfish
Step-by-step explanation:
16+4=20
20-14=6
6 fewer starfish are there.
Lily sells loose tea for $0.71 per gram. If one gram is equivalent to 0.035273 ounces, how much does it cost to buy 0.45 pounds of Lily's tea?
a $108.70
b. $144.93
с. $536.77
d. $715.69
Answers
Answer:
it is B. 144.93 on edge my friends
Step-by-step explanation:
cause i know so
13 less than the product of a number and 6 is 5
Answers
Answer: Excuse me, what do you mean "and 6 is 5?"
Step-by-step explanation:
The sum of three consecutive even integers is −312. Find the Integers.
Answers
Answer:
-106, -104, -102
Step-by-step explanation:
Calculate the correlation coefficient, r, for the data below.
Answers
This question is incomplete, the complete question is;
Calculate the correlation coefficient, r, for the data below.
X = -10 -8 -1 -4 -6 -7 -5 -3 -2 -9
Y = -15 -13 4 -4 -7 -11 -6 -2 1 -13
Answer: the correlation coefficient, r, for the data is 0.9896
Step-by-step explanation:
Given the data in the question;
correlation coefficient r = ?
we know that, C_Coeff is;
r = [ (Zn(∑xy) - (∑x)(∑y) ] / [ √[( n∑x² - (∑x)²) ( n∑y² - (∑y)²)] ]
so ;
X Y X² Y² XY
-10 -15 100 225 150
-8 -13 64 169 104
-1 4 1 16 -4
-4 -4 16 16 16
-6 -7 36 49 42
-7 -11 49 121 77
-5 -6 25 36 30
-3 -2 9 4 6
-2 1 4 1 -2
-9 -13 81 169 117
∑ -55 -66 385 806 536
now we substitute our values into the formula
r = [ (10×536 - (-55)(-66) ] / [ √[( 10×385 - (-55)²) ( 10×806 - (-66)²)] ]
r = 1730 / √( 825 × 3704 )
r = 1730 / √3055800
r = 1730 / 1748.0846
r = 0.9896
Therefore the correlation coefficient, r, for the data is 0.9896
Indira is using a number line to add Negative 1 + (negative 3). She begins by showing –1 on the number line, as shown below.
A number line going from negative 5 to positive 5. The area between negative 1 and 0 is highlighted.
What is the sum of Negative 1 + (negative 3)?
–4
–3
2
3
Answers
-1+-3=-4
Step by step-
Add like normal then add the sign since both numbers are negative.
3+1= 4 then add the sign
Answer:
-4
Step-by-step explanation:
If the Cable Company offers cable for $110 a month but gives a 10% discount for new customers. Find the cost for the new customers.
answer quickly. Thank You!!
Answers
Answer:
$99
Step-by-step explanation:
10% of 110 is 11
110 - 11
99
Answer:
$99
Step-by-step explanation:
First do
10% of 110
Which is 11
Then do
110-11
Which is 99
So the answer is $99
After you have opened a checking account and made a deposit, you may write
checks. A check directs the bank to deduct money from your checking account to
make a payment. Your account must contain as much money as the amount of the
check you are writing to avoid overdrawing your account.
Write each amount in words as it would appear on a check.
Answers
Answer:
kentrell top Guadlin 4kt
What involves examining and evaluating information, as well as weighing alternatives and considering consequences?
Answers
Answer: Critical Thinking.
Step-by-step explanation:
Critical thinking is the process of conceptualizing, applying, analyzing, synthesizing, and/or reviewing data acquired from, or generated by, observation, experience, reflection, reasoning, or communication actively and skillfully as a guide to intellectually disciplined belief and action.
what is
14/24 plus 10/36
Answers
Answer:
31/ 36
Step-by-step explanation:
21 + 10/ 36
= 31/ 36
hope it helps!
Work out 77 % of 775.66 m Give your answer rounded to 2 DP.
Answers
Answer:
597.25 m
Step-by-step explanation:
We need to find 77% of 775.66 m.
It can be calculated as follows :
[tex]77\%\times 775.66\\\\=\dfrac{77}{100}\times 775.66\\\\=597.25\ m[/tex]
So, 77% of 775.66 m is equal to 597.25 m.
Can the sides of a triangle have lengths 13.9, 12.7, and 5.1?
yes or no?
Answers
Answer:
Yes
Step-by-step explanation:
Sure. For example 5.1+13.9>12.7 or 5.1+12.7>13.9 or 13.9-5.1<12.7
Answer:
Yes
Step-by-step explanation:
What Is The Prime Exponent Form Of 192
Answers
Answer:
2^6 * 3
Step-by-step explanation:
Simplify algebra
8x^6 divided by 2x^2
9^7 multiplied 9^-5
Answers
Answer:
8x^6 divided by 2x^2 = 4x^4
9^7 multiplied 9^-5 = 81
2 ( x + 1 )
it's just a simple warm up question, please hurryyy.
Answers
Answer:
2x+2
Step-by-step explanation:
It's multiplicative distribution - when you multiply something in parenthesis by another expression, you distributively multiply the expression to the expression in the parenthesis.
Two stores are having a donut sale. Donald’s Donut
Shop is selling one dozen donuts for $7.08. Sunrise
Donut Co. is selling 8 donuts for $5.84. Which of
the following places do you think is having the better
deal on donuts? Justify your answer.
Answers
first find the price of 1 donut...
7.08 / 12 = 0.59
5.84 / 8 = 0.73
Donald's donut shop
The weights of several adult guinea pigs in a pet store are: 33, 39, 42, 33 39, 31, 32 and 37 ounces. Find the mean absolute deviation. Describe what the mean absolute deviation tells you about the data.
Answers
Answer:
35.75 I added them all up and divided by the amount of numbers there is
Homework Help! ASAP
Question: A 64-ounce bottle of apple juice cost $5.76. A 15-ounce bottle of apple juice costs $1.80. Which item costs less per ounce?
Write the rate for each bottle 64-ounce bottle:
15-ounce bottle:
b. Write the unit rates.
c. Which item cost less per ounce?
Answers
2. $1.80/15 Ounces
1. $0.09/ounce
2. $0.12/ounce
So, in conclusion, the 64 ounce bottle is cheaper than the 15 ounce bottle by $0.03.
Write the relation as a set of ordered pairs.
A relation. An arrow goes from negative 2 to 4, 0 to 0, 2 to 4.
a.
ordered pairs: {(4, –2), (0, 0), (2, 4)}
b.
ordered pairs: {(–2, 4), (0, 0), (4, 2)}
c.
ordered pairs: {(–2, 4), (0, 0), (2, 4)}
d.
ordered pairs: {(4, –2), (0, 0), (4, 2)}
Answers
Answer:
Write the relation as a set of ordered pairs.
Step-by-step explanation:
A relation. An arrow goes from negative 2 to 4, 0 to 6, 2 to 8.
a.
ordered pairs: {(4, –2), (0, 6), (2, 8)}
b.
ordered pairs: {(–2, 4), (0, 6), (2, 8)}
c.
ordered pairs: {(4, –2), (0, 6), (8, 2)}
d.
ordered pairs: {(–2, 4), (6, 0), (8, 2)}
Megan had some money in her wallet. Her mom gave her $38.25 to go shopping. Now Megan has fifty dollars. How much money did Megan have in her wallet before her mom gave her money?
Answers
Answer:
$11.75
Step-by-step explanation:
50-38.25=11.75
Answer:
She had $11.75 in the beginning
Step-by-step explanation:
Subtract
50-38.25
you should get 11.75
hope this helps
take care
prove that a rectangle has congruent diagonals
Answers
Answer:
Look below
Step-by-step explanation:
Lets say there is a rectangle abcd
One way is: Triangle ABC is congruent to triangle DCB
Another way is: Since a rectangle is a parallelogram too, segment ab=dc. This is because opposite sides of a parallelogram are congruent.
whats 10424123^2. yep have fun
Answers
Find the slope intercept equation of the line
Answers
Answer:
Step-by-step explanation:
slope-intercept formula looks like [y=mx + b]
use two points to find the slope.. or look at the graph carefully to see it there are easy points to count from.... hmmm
yes.. this is very easy to just count.. no math needed :P
the slope is posive. b/c the graph looks like you are walking up hill.. and it's rise over run is 2/1 .. so the slope is 2
then by looking at the graph I can also see that when x = 0 the line pass exactly thur +1.. sooo that tells me all I need to know for the sloop-intercept formula
y= 2x+1 :) see?
Need answer asap due midnight today
Answers
Proof is by setting that equal to 144, then subtracting it to move it to the other side
Simplified to (x-9) (x+16)
Answers are 9 and -16
A circular light fixture has a radius of 20 centimeters.what is the circumference of the light fixture
Answers
Answer:
[tex]\boxed {\boxed {\sf 40 \pi \ cm, 125.6 \ cm, or \ 125.6637061 \ cm}}[/tex]
Step-by-step explanation:
Circumference can be found by multiplying the diameter of the circle by pi.
[tex]c= \pi d[/tex]
We are given the radius, which is 20 centimeters. We need the diameter, which is twice the radius.
[tex]d= 2r[/tex]
[tex]d= 2(20 \ cm)[/tex]
[tex]d= 40 \ cm[/tex]
Substitute the diameter into the formula. There are many ways to calculate circumference, so I included a few options.
1. In Terms of Pi
If we solve in terms of pi, we leave π in the answer.
[tex]c=\pi ( 40 \ cm)[/tex]
[tex]c= 40 \pi \ cm[/tex]
2. Using 3.14 as Pi
[tex]c=\pi ( 40 \ cm)[/tex]
Substitute 3.14 in for pi.
[tex]c= (3.14)(40 \ cm)[/tex]
[tex]c=125.6 \ cm[/tex]
3. Using 3.14159 as PI
[tex]c=\pi ( 40 \ cm)[/tex]
Use the pi button on a calculator.
[tex]c= 125.6637061 \ cm[/tex]
The circumference of the light fixture is 40π, 125.6 cm, or 125.6637061 cm
Kings Plaza’s Lids Store has a sale on fitted hats 3 for $33.00, and a sign states that 4 Brooklyn Nets headbands cost $12.00. Find the total cost of buying 2 fitted hats and 3 headbands
Answers
Answer: $45.00
Step-by-step explanation:
$33.00 + $12.00 = $45.00
Hellllpppp plsssss just click the picture then you see it
Answers
Answer:
1. 8 + 13 = 13 + 8.
2. 6 + ( 12 + 4) = 6 + ( 4 + 12).
Step-by-step explanation:
Answer:
The Commutative Property of Addition is changing the order of the numbers to get the sum, but not changing the actual sum itself.
The Associative Property of Addition is the allowance of being able to re-group numbers and still get the same sum, or answer.
