The trend line passes through (10,9) and (35,0). Write an equation for the trend line.
Answer: Solution :
Step 1 :
Make a scatter plot of Lily’s running data.
Step 2 :
To draw a trend line, use a straight edge to draw a line that has about the same number of points above and below it. Ignore any outliers.
Step 3 :
Find the slope of the trend line.
The line passes through points (2, 20) and (4.5, 45).
Use the slope formula.
m = (y2 - y1) / (x2 - x1)
Substitute x1, = 2, y1 = 20, x2 = 4, and y2 = 45.
m = (45 - 20) / (4.5 - 2)
m = 25 / 2.5
m = 10
Step 4 :
Find the y-intercept of the trend line.
Slope-intercept form equation of a line :
y = mx + b
Plug y = 20, m = 10 and x = 2.
20 = 10 · 2 + b
20 = 20 + b
Subtract 20 from both sides.
0 = b
Step 5 :
Use your slope and y-intercept values to write the equation.
Slope-intercept form equation of a line :
y = 10x + 0
So, the equation for the trend line is
y = 10x
Example 2 :
David records the number of chapters and the total number of pages for several books as given below.
No. of chapters
3
4
5
8
10
11
15
17
19
No. of pages
20
44
50
95
90
130
125
170
160
Step-by-step explanation:
at a summer camp there is one counselor for every 5 campers.
Answer:
Then if there were 10 campers, there would be 5 counselors
Step-by-step explanation:
For every five campers, there is one counselor. Divide the number of campers by 2 two find how many counselors there are.
10) pls help i’ll give 20 points :)
Answer: The blank space in the equation is 4.
Step-by-step explanation: -6 x +2 is -12. -48/-12 is 4. Therefore, the blank space in the equation is 4.
answer all correctly
Answer:
2. y = -9x + 7
2. y = 3x - 2
3. y - 6 = 10(2x - 1)
1. 5x + 2y = 10
4. 5x = 3y + 9
3. y + 2 = 6(x - 4)
Step-by-step explanation:
Find the slope between the following two points: (-4, 6) (5, 2)
Answer:
m=-4/9
Step-by-step explanation:
Hope this helps ❤
A colony of bacteria starts out with 175 cells and they double every hour write an equation that models the number of cells y after x hours
Answer:
200
Step-by-step explanation:
Evaluate x2 when x =5
Answer:
10
Step-by-step explanation:
If x=5 then
Plug in the x
(5)2 then multiply
(5)2=10
Which factors composed the least common denominator of for this difference?
Answer:
-2x, (x+6), and (x-2)
I got this right on edmentum.
Step-by-step explanation:
п
What is the value of p in the proportion below?
20
Б
20
р
12
2
10
Оооо
40
72
Answer:
p = 40
Step-by-step explanation:
20/6 = p/12
20 × 12 = 6 × p
240 = 6p
p = 240/6
p = 40
I need this quick!!!
Write down the similarities and differences of photosynthesis and chemosynthesis (venn diagram) first to answer appropriately will get brainliest!
Answer:
They are both processes by which organisms produce food. Photosynthesis is powered by sunlight while chemosynthesis is powered by chemical energy
ik I'm late but just wanted points hope you passed whatever you did
solve for z 7z + 4 - 9z = 8 (also please don't have the answer be a negative)
Answer:
z = -2
Step-by-step explanation:
lol okay If it said that
5x^2-10x=0 written in factored form
Need help ASAP
which point could represent 5 over 3?
Answer:
I think D, I am not sure though
Step-by-step explanation:
Answer:
5/3 is 5÷3 = 1.666666. point C is closest to 1.67.
What is the expression of the product of w and 8
Answer:
The expression would be 8w
Help me Out pleaseeeeeeeee
1
Find the distance.
Answer:
7.8
Step-by-step explanation:
please help asap i’m failing
The lines shown below are parallel. If the green line has a slope of -3/7, what is
the slope of the red line?
1. What is 7/50 as a Percentage?
2. What is 3/25 as a Percentage?
3. What is 3/16 as a Percentage?
Please help!
Is it a function? Explain
Answer:
Yes.
Step-by-step explanation:
For a graph to be a function, it must have precisely one y-value for every x-value.
In this case, this graph is a function because it meets the requirements of having one y-value for every x-value.
Let me know if this helps!
give me the most DETAILED explanation.
6 + 6 - 6 x 6 ÷ 6 = ?
Y = -3 + 1/2x 3x + 2y = 2
Help ASAP this is due today
Help. Please open powerpoint and help me!
Answer:
30.4%
1000 at £1.10
1000 x 1.10 = £1100
35% of 1000 is given away
1000 - 35% = 1000 - 350 = 650 left
35% of £1100 = £385, subtract to get £715 pounds worth of pins left
650 are left, with 385 pounds lost
60% of 650 = 390 pins sold at £3 each
40% of 650 = 260 sold at £5 for 2
3 x 390 = £1170 made from the first lot
260/2 = 130 x 5 = £650 made from the second lot
£1170 + £650 = £1820 from sales
Sales - cost to make - losses (giveaways) = profit value
1820 - 1100 - 385 = 335 pounds of profit
To find the gross profit margin, we take the profit, and find what percentage of the production cost it is.
335 is about 30.45% of 1100
30.45%, which is 30.4% to 1 decimal place.
The user is not responsible for any errors and all care should be taken to validate answer by self before submission.
Which Proportion is correct?
Answer:
sorry but i need the points <3
Step-by-step explanation:
pls help
Solve the following system of equations for y using elimination:
6x – 12y = 24
-X – 6y = 4
A. -6
B. 0
C. -1
D. 4
Answer:
C
Step-by-step explanation:
I don’t understand this I need help please
Answer:
B its the correct answer
PLEASE HELP YOULL GET 20 POINTS
Suppose a movie rental company charges $9.99 per month plus $1.25 for every movie rented.
A. Write a function rule that represents the relationship between the number of movies rented in a month and
the rental charge for that month.
b.
Write an equation that you could solve to find how many movies you rented if the total rental charge for one
month was $23.74.
C.
Solve this equation using a table.
Answer:
9.99+ 1.25x. X represents the every movies rented. I think my answer matches b, I am not sure.
Step-by-step explanation:
Find the slope
m for this graph
what is 4.059 divided by 100
Answer:
0.04059
Step-by-step explanation:
Evaluate each expression:
1. (-1) x 2 x 3
2. (-1) x (-2) x 3
3. (-1) x (-2) x (-3)
Need Answer for all the expressions.
[tex]x^{2} + 36x + 324 = (x + m)^{2} [/tex]
which of the following is the value of m?
A. 36
B. 18
C. 12
D. 6
Answer:
B. 18
Step-by-step explanation:
[tex]x^{2} + 36x + 324 = (x + m)^{2} [/tex]
[tex](x+18)^{2}= (x + m)^{2} [/tex]
[tex]\cancel x+18= \cancel x + m[/tex]
[tex]18= m[/tex]