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
likoan [24]
3 years ago
13

Help with all please

Mathematics
1 answer:
seropon [69]3 years ago
3 0

a) First, draw a graph. The x axis should be numbered: 0, 1, 2, 3, 4, 5, 6, 7, 8. Each number is the last digit of the year. For each year, there is one average score that has to be plotted. Number the y axis of the graph from 0-600, by increments of 50, or something around there. Now, with each year (each x value) place the dot as high as the average score. Repeat with all years. DO NOT draw a line to connect them. A scatter plot is a bunch of points that are not connected.

b) Use the form (y2-y1)/(x2-x1) where (x1,y1) (x2,y2) are any two points from 2001-2006. It does not matter which points, pick any, and assign each of the numbers x1,y1 and x2,y2. Plug it in to the equation, and simplify. This is your slope, also called m. Now plug m into the equation y-y1=m(x-x1) where y1 and x1 are the x and y coordinates of any point from 2001 to 2006. x and y dont have values themselves, they stay there. Now distribute the m into the parenthesis, add y1 to both sides (to cancel it out on the left), and you should be left with the same equation, but now in y=mx+b form. B is where the line crosses the y axis, so put a point on the vertical axis where b is. M is your slope, so every time you go to the right one number, go up M numbers. Draw another point. Repeat this until you can connect these new dots into a line. This line should be on the same graph as your other points, but might not touch all of the scatter plot points. That's still okay, just leave it as is.

c) Find the point where x=6 (meaning the year is 2006) on your line. Find the average test score for that year by seeing where the point lines up along the y axis (draw a straight line from the point to the left to see, if you have to). Take that number and add 1m (the m is the number you used in step B) to it. This predicts what the average score might be after 1 (that's why the 1 is there) year. This is a predicted value, and might not be perfectly correct!! Write/record how close this new, predicted, score is to the actual number, 515, which can be found on the scatter plot.

d) repeat step C exactly as before (still use the year 2006) , but add 4m instead of 1m, to get the predicted score 4 years after 2006 (2010), instead of 1 year after (2007).

I hope I have been of some help! Best of luck!!! :)

You might be interested in
Suppose a student reaches in the bag and randomly selects nine red chips and eleven yellow chips. Based on this sample, what is
Marysya12 [62]
The good estimate would be 9/20 and 11/20=20/20
3 0
3 years ago
Read 2 more answers
Describe the steps in solving the linear equation 3(3x − 8) = 4x + 6.
Fittoniya [83]

Answer:

x=6

Step-by-step explanation:

3(3x-8)=4x+6

First you would distribute the 3 on the L side to the parenthasies

9x-24=4x+6

Then, you would subtract 4x from both sides because it is the smallest X value

5x-24=6

Add 24 to both sides (inverse operations)

5x=30

divide both sides by 5

x=6

5 0
3 years ago
Read 2 more answers
Summarize the rules for multiplying powers with the same base dividing powers with the same base raising a product to a power an
Mashcka [7]
The rules for multiplying powers with the same base is you are basically doing the pemdas method Please Excuse My Dear Aunt Sally pemdas
3 0
3 years ago
Can someone pls help me?<br> Determine the measures of the unknown angles in the<br> figure below.
IceJOKER [234]

Answer:

x= 127

w =  53

Step-by-step explanation:

7 0
3 years ago
Why does the graph not start at zero
kykrilka [37]

Answer:

OPTION B

Step-by-step explanation:

A PERSON HEIGHT IS NOT ZERO WHEN BORN

5 0
3 years ago
Read 2 more answers
Other questions:
  • Consider the sequence: 7, 64, 121, 178, 235, ... where u, = 7
    6·1 answer
  • Determine if the following triangle is a right triangle or not using the Pythagorean theorem converse. Triangle with side length
    10·1 answer
  • 4x+y=10 missing value
    9·2 answers
  • Q1. Ten percent of the items produced by a machine are defective. A random sample of 100 items is selected and checked for defec
    7·1 answer
  • Consider the functions g(x) = 6x + 7 and h(x) = 3x - 2. find {x: g(x) &gt; h(x)}
    6·2 answers
  • PLZ HELP MEEE ASAP PLZZZZZ
    10·1 answer
  • Homework help!!!!!!!!
    5·2 answers
  • If f(x) = x ^ 2 + 3 , then f(x+y)=?
    10·1 answer
  • Select the diagram showing a pair of alternate interior angles:
    5·1 answer
  • A line is parallel to the line y = x and passes
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!