anonymous
  • anonymous
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 y-intercept of the plot indicate? (3 points)
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
Would parta be f(x) = 90-4x?
jim_thompson5910
  • jim_thompson5910
you are correct
jim_thompson5910
  • jim_thompson5910
you can also write that as f(x) = -4x + 90

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

anonymous
  • anonymous
Thank 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
  • jim_thompson5910
the 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
  • jim_thompson5910
in this specific context, the slope means "for every additional hour of playing video games, the test score decreases by 4"
jim_thompson5910
  • jim_thompson5910
what does the y-intercept represent?
anonymous
  • anonymous
y-intercept f(x)=90-4x 0=90-4x x=90/4
jim_thompson5910
  • jim_thompson5910
that's the x-intercept
jim_thompson5910
  • jim_thompson5910
to find the y-intercept you plug in x = 0 and evaluate
anonymous
  • anonymous
Thank 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
  • jim_thompson5910
y = -4x + 90 y = -4(0) + 90 ... replace x with 0 y = 0 + 90 y = 90 so the y-intercept is 90
jim_thompson5910
  • jim_thompson5910
what 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
  • anonymous
Ohhh, ok, gosh...that was simple... I appreciate it so much
jim_thompson5910
  • jim_thompson5910
no problem

Looking for something else?

Not the answer you are looking for? Search for more explanations.