A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
Check answers? Can someone please help me ASAP?!
A student is assessing the correlation between the average number of hours of playing video games in a week and average score on a math test for the students of a class. The table below shows the data:
Number of hours of playing video games
(x) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5
Score on math test
(y) 90 88 86 84 82 80 78 76 74 72
Part A: Write a function which best fits the data. (3 points)
Part B: What does the slope and yintercept of the plot indicate? (3 points)
anonymous
 one year ago
Check answers? Can someone please help me ASAP?! A student is assessing the correlation between the average number of hours of playing video games in a week and average score on a math test for the students of a class. The table below shows the data: Number of hours of playing video games (x) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 Score on math test (y) 90 88 86 84 82 80 78 76 74 72 Part A: Write a function which best fits the data. (3 points) Part B: What does the slope and yintercept of the plot indicate? (3 points)

This Question is Closed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Would parta be f(x) = 904x?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2you are correct

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2you can also write that as f(x) = 4x + 90

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you! And can I have some help with part B? Im a little confused, I know the slope is 4 but I dont understand the question

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2the slope of 4 means that as x increases by 1, y decreases by 4 slope = (change in y)/(change in x) = (4)/(1) = 4

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2in this specific context, the slope means "for every additional hour of playing video games, the test score decreases by 4"

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2what does the yintercept represent?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yintercept f(x)=904x 0=904x x=90/4

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2that's the xintercept

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2to find the yintercept you plug in x = 0 and evaluate

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you for trying to explain this to me! I dont really understand it so Im going to ask my teacher for a tutoring session, thank you again

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2y = 4x + 90 y = 4(0) + 90 ... replace x with 0 y = 0 + 90 y = 90 so the yintercept is 90

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2what does this mean? it means that if you don't play any video games at all, the score you get is 90. In a sense, this is like the starting value.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ohhh, ok, gosh...that was simple... I appreciate it so much
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.