Mathematics Middle School

-What is the y-intercept of the line of best fit?
-What is the slope of the line of best fit for this scatter plot?
-What is the equation of the line of best fit?

-What Is The Y-intercept Of The Line Of Best Fit?-What Is The Slope Of The Line Of Best Fit For This

Answers

Answer 1

Answer:

y-intercept : 8

slope: -1/2

equation:   [tex]y = -\dfrac{1}{2}x + 8[/tex]

Step-by-step explanation:

The y-intercept is where the line crosses the y axis and you can see it crosses at y = 8 (when x =0)

Slope of the line can be found by the formula (y2-y1) / (x2-x1)  where 9x1, y1) and (x2, y2) are two points on the line

Let's take the points (0, 8) and (10, 3) the two extreme points on the line

Slope = (3 - 8) / (10 - 0) = -5 / 10 = - 1/2

Equation of a line in slope intercept form is

y = mx + c

where m is the slope  

b is the y intercept

The equation of the line is therefore

[tex]y = -\dfrac{1}{2}x + 8[/tex]

Answer 2

Answer:

Y-intercept = 8

Slope = -1/2t

Equation = y =-1/2x+8

Step-by-step explanation:

When x = 0, y = y-intercept.

Therefore, the y-intercept is 8.

We can find the slope using the formula y2-y1 / x2-x1 = m.

Let's use the points (0,8) and (4,6)

6-8 / 4-0 = m;

m = - 1/2.

Given that the generic formula is y=mx+b, and m-slop and b=y-intercept, we have:

y = -1/2x+8.

Related Questions

On the windowsill is a plant that is 8 inches tall. It is growing 2 inches per week. A second plant, which is 3 inches tall, is on the coffee table. It is growing 4 inches per week. Eventually the two plants will be the same height. How tall will the plants be?

Answers

Answer:

Let's call the height of the first plant as x and the height of the second plant as y.

We know that the first plant is 8 inches tall and growing 2 inches per week, so we can write the equation:

x = 8 + 2t (where t is the time in weeks)

We know that the second plant is 3 inches tall and growing 4 inches per week, so we can write the equation:

y = 3 + 4t

We also know that the two plants will be the same height when they meet, so we can set the two equations equal to each other:

x = y

8 + 2t = 3 + 4t

5 = 2t

t = 2.5

So the plants will be the same height in 2.5 weeks. To find out how tall they will be, we can plug this value of t back into either equation:

x = 8 + 2(2.5) = 8 + 5 = 13 inches

y = 3 + 4(2.5) = 3 + 10 = 13 inches

So both plants will be 13 inches tall when they reach the same height.

If I helped you, could you please make my answer as best?

a) The sum of two binomials is –3x – 2y. What could the two binomials be?

b) The difference between two binomials is –3x – 2y. What could the
binomials be?

Answers

Answer:

Step-by-step explanation:

rgrhh

3.9y + 3 - 2.9y=

anybody know?!

Answers

Answer:

= y + 3

Step-by-step explanation:

Group:

= 3.9y - 2.9y + 3

Add elements together:

= y + 3

3.9y + 3 - 2.9y

Arrange equation so that like terms are next to each other

3.9y - 2.9y + 3

Subtract.

1y + 3

Since 1y and 3 are not like terms, we cannot add them.

Therefore, 1y + 3 is the answer.
You can also write y +3.

Answer the question below:

Answers

Answer: In sure they do!

Step-by-step explanation:

t's possible that the circle's diameter and circumference are the same as 7.2 inches and 28 inches. To answer the question, I'm going to use the formula C. Equals pi times D. It's Mhm. It's not possible for a circle with a diameter of 7.2 in to be the same as a circle with a 22.62 in pi. You end up with a smaller circumference when you plug 7.2 into the formula for circumference.

A school wants to sell 300 sweatshirts for a fundraiser. All sweatshirts have the same price, and they want to make a total of $11,778.00 in sales.

Answers

They will be priced at $39.26
The total would be $39.26

Help me with this pls

Answers

Answer:

The relationship between angle 1 and angle 2 is that they both have the same value and are congruent angles. Because angle 1 is 108 degrees, angle 2 is also 108 degrees.

they’re both congruent and both 108 degrees

write -90 7/50 as a decimal number.

Answers

Answer: convert -90 7/50 to a fraction therefor the answer is -90.14

i’m pretty sure it would end up being -90.14

How can this question be solved? Please help me.

Answers

Answer: 8/35 square yards

Step-by-step explanation:

The formula to find an area of a rectangle is L * W (length * width). Here your length would be 4/7 yards, and your width would be 2/5 yards, so plugging it into the formula would be 4/7 * 2/5 = 8/35 square yards.

8/35 square yards is answer

evaluate the expressions

1. 3(8) - 15

2. 4(2+3) - 12

3. 4(12)+11

4. 9(14-5) - 42

5. 3(7) - 4(2)

6. 7(8) - 5(8)

Answers

It is 20 for that one answer
1. 9
2. 8
3. 59
4. 39
5. 13
6. 16

Can anyone help, would like a explaination with it to

Answers

Answer:B) 90 g/cm3

Step-by-step explanation:

Density= mass/volume

m=450g

v=5cm3

therefore density=450/5

                            =90 g/cm3

The dot plot shows predictions for the winning time in a 200-meter sprint. The winner finished the race in 22.3 seconds. Find the greatest percent error for a prediction to the nearest tenth of a percent. Justify your answer.

Answers

Answer:

Step-by-step explanation:

22.8 is the farthest away from the correct time. The people that got this were off by the percent difference from 22.8 to 22.3. This is 2.21729%≈2.2%

hope this helps

helppppppppppppppppppppppp

Answers

Answer:

Step-by-step explanation:

The answer should be number three, this is because there is a dot located on number 10, that means he studied for one hour longer.

Can anybody answer both of these questions for me? (100 points)

Answers

Answer:d

Step-by-step explanation:

its steo by step answer: d

What is the value of x and y?

Answers

Answer: y=41 and x=41

Answer:

x=41 y=41

Step-by-step explanation:

y is a mirror of the other side which is 41 degrees. So y=41. m and n are parallel so x is also equal to 41.

Find the slope of the line passing through the points (-3,1) and (-3,-6).

Answers

The slope of the line is undefined

Answer:

undefined

Step-by-step explanation:

Please answer this question I will give you brainlest
Doug builds a skateboard ramp.The base is 6 feet long and the height is 1.5 feet.What is the slope of the ramp?Explain

Answers

Answer: The slope of the ramp is 0.25

Step-by-step explanation: The slope of a ramp is a measure of how steep it is. It is typically expressed as a ratio of the height to the length, also known as the rise over the run. To calculate the slope of the ramp, you can divide the height by the length.

In this case, the ramp is 6 feet long and 1.5 feet high, so the slope is:

1.5 feet / 6 feet = 0.25

So the slope of the ramp is 0.25, which can also be written as a fraction 1/4 or 25%. This means that for every four feet of horizontal distance, the ramp rises by one foot.

Alternatively, you can think of this as the angle of the ramp, if the angle formed by the ramp is small it will have a small slope and if the angle formed is large, it will have a large slope.

In simpler terms, the slope represents how steep the ramp is. The higher the slope, the steeper the ramp will be. And the lower the slope, the gentler the ramp will be. In this case, since the slope is 0.25 it is a gentle ramp.

Answer:

0.25

Step-by-step explanation:

I had this before I got it wrong but then my teacher gave me the answer

Please help me solve this.

Answers

It's C! Sorry if that answer is wrong tho have a good day

can someone help me with this question?? its due midnight so if u see this after midnight u dont need to answer

Answers

FShe is a workerhefgkutfytvvhgvehgvxhhgvaghecCqe

please help ya girl out!!

Answers

Answer:

Does this help

Step-by-step explanation:

i tried lol

The answer is x=b+_ 24[8263]737

Need answer asap will give brainly if it's right

Answers

Answer:

It is not possible to form a polygon with side lengths of 6cm, 2cm, and 7cm. In order for a polygon to be possible, the sum of the interior angles must be less than 180 degrees. To form a polygon with 3 sides (triangle), the sum of the interior angles must be 180 degrees. But the sum of these side lengths does not add up to 180 degrees, therefore it's not possible to form a polygon with these side lengths.

Eve wrote a total of 24 pages over 8 hours. How many hours will Eve have to spend writing this week in order to have written a total of 33 pages? Solve using unit rates.

hours:

Answers

Answer: 11 hours

Explanation: do 24/8 and you’ll get the unit rate which is 3 then do 33/3 and you’ll get your answer 11 hours
Answer 11 hours


Explanation……………

what is the value of x

Answers

Answer: 16 degrees

Step-by-step explanation:

Since m||n, then t is a transversal.

Therefore, you can see that x = 16 degrees

Answer:

16°

Step-by-step explanation:

Given that m and n are parallel, we know that the angles on this transversal are equal. Using the Alternate Exterior Angles Theorem we can see that x=16 because 16 degrees is the angle measurement of the alternate exterior angle.

-Hope this helped

an alligator named Camila Arguello was 32 inches long in 2022, she was measured now in 2023, she is now 38 inches long, find the percent increase and percent CHANGE.

Answers

Answer:

Step-by-step explanation:

38-32=6

1%= 1/100    

32/100+ 38/100

changed by 6%

Can someone pls explain to me

Answers

Answer:

272.5

Step-by-step explanation:

dotted line of the circle = 12 because this whole thing is a parallelogram + half a circle.  so diameter for the 1/2 circle is 12

so that means radius = 6, which is 1/2 of the diameter

circle area = π*r² = 36π

1/2 of it = 18π = 56.5

parallelogram area = base * height = 24 *9 =216

total  216+56.5

Paula was buying candy from a candy dispenser. She inserted a quarter and expected to get 14 pieces of candy. Only 10 pieces of candy actually came out of the dispenser. What is the percent error for the number of candy pieces Paula expected to get?

If necessary, round your answer to the nearest tenth of a percent.

Answers

Answer: 71.4%

Step-by-step explanation: I looked it up

Answer:

40%

Step-by-step explanation:

(14-10) ÷ 10

4 ÷ 10

2/5

Convert 2/5 into percentage

Divide 2/5: 0.40

0.40 x 100: 40%

an alligator was 32 inches long in 2022, she was measured again in 2023, she now is 38 inches long, what was the percent change?

Answers

6 Percent because 32+6=38
(V2−V1)/|V1|×100
=(38−32)/|32|×100
=6/32×100
=0.1875×100

=18.75%change
=18.75%increase

Find the surface area of the prism.

Answers

Answer:

Step-by-step explanation:

9.647×10^7 in standard form

Answers

Since the exponent of the scientific notation is
positive 7, move the decimal point 7 places to
the right. 96470000
unicorns8627 • Ambitious

Answer:

96470000x

Step-by-step explanation:

Creative crafts gives scrapbooking lessons for $15 dollars per hour plus a $10 supply charge. Scrapbooks incorporated gives lessons for $20 dollarts with no aditional charges. Write and solve a system of equations that represent the situation. Interpret the solution.

NEED ANSWER NOW PLEASE

Answers

Answer:12

Step-by-step explanation:15$/10 times 20$=120/10=12$

The system of equations is:
y=15x+10
y=20x
x= 2
y= 40
(Y equals the total amount of money and x equals the number of dollars per hour)

PLEASE WITH DECIMALS What is this number in standard form?

(8×100)+(4×1)+(6×1100)+(3×11,000)

Enter your answer in the box.

Answers

Answer:

40,404

have a good day!

40,404

Hope this helps
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